Hi,

I am using Windows 7 Enterprise and outlook 2010 edition

Suddenly I got the "Cannot start Microsoft Outlook. Unable to open the Outlook window. The set folders could not be opened. The server is not available. Contact your administrator if this condition persists".

It worked only after creating another outlook profile. Is there anyway to solve the issue without creating new outlook profile.

 

Regards,

Boopathi

Hi,

 

Thank you for contacting Outlook IT Pro Discussions Services. 

 

From your description, I understand that you are unable to start Outlook 2010 program on the Windows 7 Enterprise system and encountered the following error message:

Cannot start Microsoft Outlook. Unable to open the Outlook window. The set folders could not be opened. The server is not available. Contact your administrator if this condition persists

You have resolved this issue by creating another Outlook profile. Now you would like to know if there are other methods to resolve this issue without creating another Outlook profile. If there is any misunderstanding, please feel free to let me know.

 

Actually, this issue occurs as the current navigation pane in Outlook is not working properly. We can try to use the command "Outlook.exe /resetnavpane" to clear and regenerate the navigation pane for the current Outlook profile.

 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

Note: I assumed that your Office program is installed in C:\Program Files. If it is installed in other path, you can change the path.

 

If the problem persists after this, the best method is to create a new Outlook profile.

 

Please take your time to try the suggestions and let me know the results at your earliest convenience. If anything is unclear or if there is anything I can do for you, please feel free to let me know.

 

Best Regards,

 

Sally Tang

• Marked as answer by Sally Tang Thursday, July 01, 2010 3:37 AM

Hi,

 

Thank you for contacting Outlook IT Pro Discussions Services. 

 

From your description, I understand that you are unable to start Outlook 2010 program on the Windows 7 Enterprise system and encountered the following error message:

Cannot start Microsoft Outlook. Unable to open the Outlook window. The set folders could not be opened. The server is not available. Contact your administrator if this condition persists

You have resolved this issue by creating another Outlook profile. Now you would like to know if there are other methods to resolve this issue without creating another Outlook profile. If there is any misunderstanding, please feel free to let me know.

 

Actually, this issue occurs as the current navigation pane in Outlook is not working properly. We can try to use the command "Outlook.exe /resetnavpane" to clear and regenerate the navigation pane for the current Outlook profile.

 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

Note: I assumed that your Office program is installed in C:\Program Files. If it is installed in other path, you can change the path.

 

If the problem persists after this, the best method is to create a new Outlook profile.

 

Please take your time to try the suggestions and let me know the results at your earliest convenience. If anything is unclear or if there is anything I can do for you, please feel free to let me know.

 

Best Regards,

 

Sally Tang

• Marked as answer by Sally Tang Thursday, July 01, 2010 3:37 AM

Hi,

 

Thank you for contacting Outlook IT Pro Discussions Services. 

 

From your description, I understand that you are unable to start Outlook 2010 program on the Windows 7 Enterprise system and encountered the following error message:

Cannot start Microsoft Outlook. Unable to open the Outlook window. The set folders could not be opened. The server is not available. Contact your administrator if this condition persists

You have resolved this issue by creating another Outlook profile. Now you would like to know if there are other methods to resolve this issue without creating another Outlook profile. If there is any misunderstanding, please feel free to let me know.

 

Actually, this issue occurs as the current navigation pane in Outlook is not working properly. We can try to use the command "Outlook.exe /resetnavpane" to clear and regenerate the navigation pane for the current Outlook profile.

 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

Note: I assumed that your Office program is installed in C:\Program Files. If it is installed in other path, you can change the path.

 

If the problem persists after this, the best method is to create a new Outlook profile.

 

Please take your time to try the suggestions and let me know the results at your earliest convenience. If anything is unclear or if there is anything I can do for you, please feel free to let me know.

 

Best Regards,

 

Sally Tang

Hi,

 

Thank you for contacting Outlook IT Pro Discussions Services. 

 

From your description, I understand that you are unable to start Outlook 2010 program on the Windows 7 Enterprise system and encountered the following error message:

Cannot start Microsoft Outlook. Unable to open the Outlook window. The set folders could not be opened. The server is not available. Contact your administrator if this condition persists

You have resolved this issue by creating another Outlook profile. Now you would like to know if there are other methods to resolve this issue without creating another Outlook profile. If there is any misunderstanding, please feel free to let me know.

 

Actually, this issue occurs as the current navigation pane in Outlook is not working properly. We can try to use the command "Outlook.exe /resetnavpane" to clear and regenerate the navigation pane for the current Outlook profile.

 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

Note: I assumed that your Office program is installed in C:\Program Files. If it is installed in other path, you can change the path.

 

If the problem persists after this, the best method is to create a new Outlook profile.

 

Please take your time to try the suggestions and let me know the results at your earliest convenience. If anything is unclear or if there is anything I can do for you, please feel free to let me know.

 

Best Regards,

 

Sally Tang

• Marked as answer by Sally Tang Thursday, July 01, 2010 3:37 AM

Thnaks Sally Tang,

 

It is working.

regards,

boopathi

Hi,

 

I am glad to hear that the problem is resolved. I appreciate all your time and effort on this issue.

 

Sally Tang

I have this exact same problem and when I run Outlook.exe /resetnavpane, it just gives me the same message.

I am running Windows 7 Ultimate and Office 2010 Professional Plus.

This started happening after I ran the Easy File and Transfer Wizard from my old laptop also running windows 7, but running Office 2007.

I see no way to create a new profile since there is no longer a mail icon on the Control Panel. But I will go google that and see if I can find it.

 

Any help would be greatly appreciated.

Thanks,

Ron Patrick

I'm having the same issue but the /resetnavpane did not resolve my issue

That path didn't work.  I'm using Vista and there are two users.  Any suggestions?

I'm having the same problem but I'm using windows 7 with Outlook 2003....I sure hope I can get my email back.............Any help is of course greatly appreciated!

I too am suffering similar problems to those outlined above.  I am using Windows 7 Pro and Outlook 2010 version.  These have been working correctly for a couple of months, since putting them on my brand new desktop.  For whatever reason, I was presented with the message "Cannot start Microsoft Outlook. Cannot open the Outlook window.  The set of folders cannot be opened.  The file J:\OutlookCopyFilesFromDesktop\Outlook.pst is not an Outlook data file (pst) "

I have tried out the above fix, 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

 

but the program just returns to the same info box.  I have (a) removed the program from my computer and re-installed it (b)  done a System Restore and still return to the same point.

 

CAn anyone point me in the right direction, please?

 

• Proposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM
• Unproposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM

I too am suffering similar problems to those outlined above.  I am using Windows 7 Pro and Outlook 2010 version.  These have been working correctly for a couple of months, since putting them on my brand new desktop.  For whatever reason, I was presented with the message "Cannot start Microsoft Outlook. Cannot open the Outlook window.  The set of folders cannot be opened.  The file J:\OutlookCopyFilesFromDesktop\Outlook.pst is not an Outlook data file (pst) "

I have tried out the above fix, 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

 

but the program just returns to the same info box.  I have (a) removed the program from my computer and re-installed it (b)  done a System Restore and still return to the same point.

 

CAn anyone point me in the right direction, please?

 

• Proposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM
• Unproposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM

I too am suffering similar problems to those outlined above.  I am using Windows 7 Pro and Outlook 2010 version.  These have been working correctly for a couple of months, since putting them on my brand new desktop.  For whatever reason, I was presented with the message "Cannot start Microsoft Outlook. Cannot open the Outlook window.  The set of folders cannot be opened.  The file J:\OutlookCopyFilesFromDesktop\Outlook.pst is not an Outlook data file (pst) "

I have tried out the above fix, 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

 

but the program just returns to the same info box.  I have (a) removed the program from my computer and re-installed it (b)  done a System Restore and still return to the same point.

 

CAn anyone point me in the right direction, please?

 

I too am suffering similar problems to those outlined above.  I am using Windows 7 Pro and Outlook 2010 version.  These have been working correctly for a couple of months, since putting them on my brand new desktop.  For whatever reason, I was presented with the message "Cannot start Microsoft Outlook. Cannot open the Outlook window.  The set of folders cannot be opened.  The file J:\OutlookCopyFilesFromDesktop\Outlook.pst is not an Outlook data file (pst) "

I have tried out the above fix, 

To run this command, click the Start pearl, in the Search box, type command. Right click on Command Prompt and press Enter. Run the following command in the Command Prompt:

"C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane

 

but the program just returns to the same info box.  I have (a) removed the program from my computer and re-installed it (b)  done a System Restore and still return to the same point.

 

CAn anyone point me in the right direction, please?

 

• Proposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM
• Unproposed as answer by Corbomite Thursday, October 06, 2011 6:20 PM

I had the same issue running in cached mode for some reason Outlook did not know where to creat the offline (ost) files I just created a "Outlook Data" folder in my docs. Control panel ->Mail 32 --> Email Accounts --> View or change existing email accounts --> Click on the Change --> click on More settings --> ADvanced TAB --> Offline folder file settings browse to a existing folder or create one and Outlook should setup your offline data here. Or just turn off cached mode if you dont need it. Either way you should no longer get the error.

• Proposed as answer by AnkurI Saturday, October 13, 2012 3:21 PM

I had the same issue running in cached mode for some reason Outlook did not know where to creat the offline (ost) files I just created a "Outlook Data" folder in my docs. Control panel ->Mail 32 --> Email Accounts --> View or change existing email accounts --> Click on the Change --> click on More settings --> ADvanced TAB --> Offline folder file settings browse to a existing folder or create one and Outlook should setup your offline data here. Or just turn off cached mode if you dont need it. Either way you should no longer get the error.

• Proposed as answer by AnkurI Saturday, October 13, 2012 3:21 PM

I had the same issue running in cached mode for some reason Outlook did not know where to creat the offline (ost) files I just created a "Outlook Data" folder in my docs. Control panel ->Mail 32 --> Email Accounts --> View or change existing email accounts --> Click on the Change --> click on More settings --> ADvanced TAB --> Offline folder file settings browse to a existing folder or create one and Outlook should setup your offline data here. Or just turn off cached mode if you dont need it. Either way you should no longer get the error.

I had the same issue running in cached mode for some reason Outlook did not know where to creat the offline (ost) files I just created a "Outlook Data" folder in my docs. Control panel ->Mail 32 --> Email Accounts --> View or change existing email accounts --> Click on the Change --> click on More settings --> ADvanced TAB --> Offline folder file settings browse to a existing folder or create one and Outlook should setup your offline data here. Or just turn off cached mode if you dont need it. Either way you should no longer get the error.

• Proposed as answer by AnkurI Saturday, October 13, 2012 3:21 PM

I am also having a problem opening Outlook. No reason is given, simply "Cannot start Microsoft Outlook".  I am running Windows 7 Professional with Service Pack 1 64-bit OS on a home network, not on an external server. I have just installed Microsoft Office Professional Plus 2010 after uninstalling Office Home and Business 2010 where the problem first presented itself.  I attempted to prepare an e-mail yesterday and got a message there was no Address Book, yet all contacts were there in the contacts folder. So I closed the program thinking I would restart and it would work, and that is when I began having the problem with the program unble to start. I tried the suggested command "C:\Program Files\Microsoft Office\Office 14\Outlook.exe" /resetnavpane and still get the "Cannot start Microsoft Outlook". Other programs in the suite are working.  Any suggestions.

Corbomite. I just wanna say thanks!!! I was googling this stuff and fortunately I found this webpage. It solved my problem.

Thanks a lot again!!

 

After Windows installed a set of updates last night, I started getting this problem, with the message, “Cannot start Microsoft Outlook.”

After Googling this error, I tried  a number of things.  Here’s what didn’t work for me: 

1.  Run Outlook.exe /resetnavpane. (that led back to the same “Cannot start Microsoft Outlook” error message).
2.  Enter Control panel/User accounts /Mail.  This gave the error message:  “Your system needs more memory or system resources.  Close some windows and try again.”  This occurred even though I have many gigs of available  ram and hard disk space and even though almost nothing else was open.
3. Empty the folder  Users/me/Appdata/Local/Microsoft/Outlook
4. Uninstall Office 2010, run registry cleaner, reboot, reinstall Office 2010. 

What seems to have worked is opening Outlook as administrator, and preventing some Outlook add-ins from running.  The steps I took:

1.        Navigate to Program Files (x86)/Microsoft/Office/Office14.

2.        Right click on Outlook.exe, and click on Run as administrator.

3.        Outlook then opened normally -- except for a message about a missing empty data pst file, which I found I could ignore. 

4.       Navigate to File/Options/Add-ins.  Near the bottom of the dialogue box, click on the Go button to manage Com add-ins.

5.       Remove the check mark next to one or more add-ins that you may not need .  One at a time is probably the sensible way to do it, but I unchecked three: Itunes, Microsoft Social Connector, and Microsoft Sharepoint Server Colleague Import.

6.       Close Outlook.

7.       Re-open Outlook normally.  For me, this worked – so far, at least.    Best I can tell, one of those add-ins was a problem. 

 

• Edited by Garry Garrison Thursday, December 15, 2011 7:33 PM
• Proposed as answer by Garry Garrison Thursday, December 15, 2011 7:34 PM

After Windows installed a set of updates last night, I started getting this problem, with the message, “Cannot start Microsoft Outlook.”

After Googling this error, I tried  a number of things.  Here’s what didn’t work for me: 

1.  Run Outlook.exe /resetnavpane. (that led back to the same “Cannot start Microsoft Outlook” error message).
2.  Enter Control panel/User accounts /Mail.  This gave the error message:  “Your system needs more memory or system resources.  Close some windows and try again.”  This occurred even though I have many gigs of available  ram and hard disk space and even though almost nothing else was open.
3. Empty the folder  Users/me/Appdata/Local/Microsoft/Outlook
4. Uninstall Office 2010, run registry cleaner, reboot, reinstall Office 2010. 

What seems to have worked is opening Outlook as administrator, and preventing some Outlook add-ins from running.  The steps I took:

1.        Navigate to Program Files (x86)/Microsoft/Office/Office14.

2.        Right click on Outlook.exe, and click on Run as administrator.

3.        Outlook then opened normally -- except for a message about a missing empty data pst file, which I found I could ignore. 

4.       Navigate to File/Options/Add-ins.  Near the bottom of the dialogue box, click on the Go button to manage Com add-ins.

5.       Remove the check mark next to one or more add-ins that you may not need .  One at a time is probably the sensible way to do it, but I unchecked three: Itunes, Microsoft Social Connector, and Microsoft Sharepoint Server Colleague Import.

6.       Close Outlook.

7.       Re-open Outlook normally.  For me, this worked – so far, at least.    Best I can tell, one of those add-ins was a problem. 

 

• Edited by Garry Garrison Thursday, December 15, 2011 7:33 PM
• Proposed as answer by Garry Garrison Thursday, December 15, 2011 7:34 PM

After Windows installed a set of updates last night, I started getting this problem, with the message, “Cannot start Microsoft Outlook.”

After Googling this error, I tried  a number of things.  Here’s what didn’t work for me: 

1.  Run Outlook.exe /resetnavpane. (that led back to the same “Cannot start Microsoft Outlook” error message).
2.  Enter Control panel/User accounts /Mail.  This gave the error message:  “Your system needs more memory or system resources.  Close some windows and try again.”  This occurred even though I have many gigs of available  ram and hard disk space and even though almost nothing else was open.
3. Empty the folder  Users/me/Appdata/Local/Microsoft/Outlook
4. Uninstall Office 2010, run registry cleaner, reboot, reinstall Office 2010. 

What seems to have worked is opening Outlook as administrator, and preventing some Outlook add-ins from running.  The steps I took:

1.        Navigate to Program Files (x86)/Microsoft/Office/Office14.

2.        Right click on Outlook.exe, and click on Run as administrator.

3.        Outlook then opened normally -- except for a message about a missing empty data pst file, which I found I could ignore. 

4.       Navigate to File/Options/Add-ins.  Near the bottom of the dialogue box, click on the Go button to manage Com add-ins.

5.       Remove the check mark next to one or more add-ins that you may not need .  One at a time is probably the sensible way to do it, but I unchecked three: Itunes, Microsoft Social Connector, and Microsoft Sharepoint Server Colleague Import.

6.       Close Outlook.

7.       Re-open Outlook normally.  For me, this worked – so far, at least.    Best I can tell, one of those add-ins was a problem. 

 

After Windows installed a set of updates last night, I started getting this problem, with the message, “Cannot start Microsoft Outlook.”

After Googling this error, I tried  a number of things.  Here’s what didn’t work for me: 

1.  Run Outlook.exe /resetnavpane. (that led back to the same “Cannot start Microsoft Outlook” error message).
2.  Enter Control panel/User accounts /Mail.  This gave the error message:  “Your system needs more memory or system resources.  Close some windows and try again.”  This occurred even though I have many gigs of available  ram and hard disk space and even though almost nothing else was open.
3. Empty the folder  Users/me/Appdata/Local/Microsoft/Outlook
4. Uninstall Office 2010, run registry cleaner, reboot, reinstall Office 2010. 

What seems to have worked is opening Outlook as administrator, and preventing some Outlook add-ins from running.  The steps I took:

1.        Navigate to Program Files (x86)/Microsoft/Office/Office14.

2.        Right click on Outlook.exe, and click on Run as administrator.

3.        Outlook then opened normally -- except for a message about a missing empty data pst file, which I found I could ignore. 

4.       Navigate to File/Options/Add-ins.  Near the bottom of the dialogue box, click on the Go button to manage Com add-ins.

5.       Remove the check mark next to one or more add-ins that you may not need .  One at a time is probably the sensible way to do it, but I unchecked three: Itunes, Microsoft Social Connector, and Microsoft Sharepoint Server Colleague Import.

6.       Close Outlook.

7.       Re-open Outlook normally.  For me, this worked – so far, at least.    Best I can tell, one of those add-ins was a problem. 

 

• Edited by Garry Garrison Thursday, December 15, 2011 7:33 PM
• Proposed as answer by Garry Garrison Thursday, December 15, 2011 7:34 PM

I had the same problem and tried all of the suggestions.  What I discovered when I deleted my existing profile (Mail app from Control Panel) and added it back is the my NIC did not have a Default Gateway setting!  I corrected that and Outlook now works. 

I hope this helps someone.

Terry

Garry,

Thank you for this solution.  All of a sudden a few minutes ago, I received the error "Cannot open Microsoft Outlook."  I am running Windows 7 Ultimate and Microsoft Office 2010.  The procedures you provided worked perfectly.  Itunes was not one of the add-ins in my box, but I did uncheck the two you identified in your thread and in addition, I also unchecked Microsoft SharePoint Workspace Proxy for Outlook Add-in.  Outlook is running normal right now with no problems.  Thanks!

 

Hi Sally,

I am having difficulty following your instructions perhaps because I am not a seasoned tech. At any rate, I can get to the command prompt dialog box that says Command Prompt at the top and is black with white text.

The prompt is C:\Users\Karen Hansen>

And if I type the following: Outlook.exe /resetnavpane I get 'Outlook.exe' is not recognized as an internal or external command,  operable program or batch file.  Accordingly, unless you can see something wrong with the way I typed in my command, it seems I would need to create a new Outlook Profile. How do I do this step by step? I cannot open Outlook, wouldn't I need to get into that application in order to create a new profile? Please advise.

This happened throughout my office (dribs and drabs, on most computers over a 3 week period), this has happened since we used the system internals suite and used a process (pskill.exe) to close outlook.

FYI, we use this to close outlook.exe when its left open, prior to doing backups overnight (if we don't the pst files are locked and cannot be copied, I do ask staff to close outlook!).

The resetnavpane switch  did not work for me and there's no way in hell Im reinstalling all of the office suites in my office!

I did however get it to open in "outlook.exe /safe" then closed it and opened it normally and everything was normal.

Should the program corrupt its profile/archive if closed inappropriately no, does it, yes? any long term solution?

 

PS @ Looking for scanner driver

you do not want the command prompt for that  "Outlook.exe /resetnavpane"

try pressing the windows button (the one that expands the start bar, bottom left) + R (at the same time) and that may open the RUN command window, if so type it there.

If that fails if you press the windows button (bottom left) there should be a search box, you can type it there.

Thanks

Nearly the same resolution for me as for Corbomite. 

I went to Mail32 -> Data Files tab -> mailbox. I noticed i didnt have an OST created for my mailbox. After creating one locally, i was then able to open Outlook in offline mode for the first time. 

Obvious really when I think about it!

I have tried every solution listed above. None of them works.

Outlook will not open in safe mode and I can't open it as administrator

/resetnavpane did nothing. Creating a new profile did nothing.

ost and pst folders are still intact - tried emptying the appdata/local/microsoft/outlook folder (cut and pasted all files into a new folder so I wouldn't lose them), but that didn't work, either, so I put everything back

Can't remove add-ins because I can't open Outlook to get to them, unless there's some other way of doing it

Any other ideas?

diletant1953

Thanks a lot Garry, your solution helped me get back my outlook back in business!

The only thing that worked for me was to remove the mail profile and start outlook and configure it from scratch.

I do have the same problem. I did remove all the profile at first but it doesn't work. 

But lucky what I did to solved the problem by using this step :

1. Run Outlook.exe" /resetnavpane

2.  Start > Regedit

1. Locate HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem
2. Delete the Profiles key under the Windows Messaging (Subsystem) key.

3. Then use CCleaner to remove unwanted regedit. 

4. And of course you need to reboot your PC to apply any changes in regedit. 

PS: recommended to backup regedit. In my case it works very fine  \:)/ 

• Edited by sha_arah Thursday, July 05, 2012 4:31 AM
• Proposed as answer by sha_arah Thursday, July 05, 2012 4:32 AM

I do have the same problem. I did remove all the profile at first but it doesn't work. 

But lucky what I did to solved the problem by using this step :

1. Run Outlook.exe" /resetnavpane

2.  Start > Regedit

1. Locate HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem
2. Delete the Profiles key under the Windows Messaging (Subsystem) key.

3. Then use CCleaner to remove unwanted regedit. 

4. And of course you need to reboot your PC to apply any changes in regedit. 

PS: recommended to backup regedit. In my case it works very fine  \:)/ 

• Edited by sha_arah Thursday, July 05, 2012 4:31 AM
• Proposed as answer by sha_arah Thursday, July 05, 2012 4:32 AM

I do have the same problem. I did remove all the profile at first but it doesn't work. 

But lucky what I did to solved the problem by using this step :

1. Run Outlook.exe" /resetnavpane

2.  Start > Regedit

1. Locate HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem
2. Delete the Profiles key under the Windows Messaging (Subsystem) key.

3. Then use CCleaner to remove unwanted regedit. 

4. And of course you need to reboot your PC to apply any changes in regedit. 

PS: recommended to backup regedit. In my case it works very fine  \:)/ 

I do have the same problem. I did remove all the profile at first but it doesn't work. 

But lucky what I did to solved the problem by using this step :

1. Run Outlook.exe" /resetnavpane

2.  Start > Regedit

1. Locate HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem
2. Delete the Profiles key under the Windows Messaging (Subsystem) key.

3. Then use CCleaner to remove unwanted regedit. 

4. And of course you need to reboot your PC to apply any changes in regedit. 

PS: recommended to backup regedit. In my case it works very fine  \:)/ 

• Edited by sha_arah Thursday, July 05, 2012 4:31 AM
• Proposed as answer by sha_arah Thursday, July 05, 2012 4:32 AM

Wouaw!! Corbomite, a lot of thanks!! You just saved me with your explaination!

i have error in Microsoft outlook 2007 Cannot start Microsoft Office Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The information store could not be opened.

i hard to fix it outlook.exe /resetnavpane, this did not work for me.


>>> but this work for me.
Resolution of me.

1.uninstall Microsoft office outlook 2007
2.Restart Computer
3.install Microsoft office outlook 2010

********************************

http://kvangpetchchuen.blogspot.com/

Very similar resolution for me....After trying the /resetnavpane option, which usually works, I disabled cached mode, renamed the outlook.ost file, opened Outlook just fine. Then closed Outlook and re-enabled cached mode. It created a new Outlook.ost file and synced everything up. Good as new!

On second though, a disk check or scanost may have done the trick, too. 

• Proposed as answer by Joakim Hedendahl Thursday, October 25, 2012 8:02 PM

Very similar resolution for me....After trying the /resetnavpane option, which usually works, I disabled cached mode, renamed the outlook.ost file, opened Outlook just fine. Then closed Outlook and re-enabled cached mode. It created a new Outlook.ost file and synced everything up. Good as new!

On second though, a disk check or scanost may have done the trick, too. 

• Proposed as answer by Joakim Hedendahl Thursday, October 25, 2012 8:02 PM

Very similar resolution for me....After trying the /resetnavpane option, which usually works, I disabled cached mode, renamed the outlook.ost file, opened Outlook just fine. Then closed Outlook and re-enabled cached mode. It created a new Outlook.ost file and synced everything up. Good as new!

On second though, a disk check or scanost may have done the trick, too. 

Very similar resolution for me....After trying the /resetnavpane option, which usually works, I disabled cached mode, renamed the outlook.ost file, opened Outlook just fine. Then closed Outlook and re-enabled cached mode. It created a new Outlook.ost file and synced everything up. Good as new!

On second though, a disk check or scanost may have done the trick, too. 

• Proposed as answer by Joakim Hedendahl Thursday, October 25, 2012 8:02 PM

Garry's solution worked for me, and I only had to go to step 2. 

I opened Outlook as an admin and voila! Fixed!  Not sure what corrupted the file.  The last thing I did in Outlook was change an Auto-Correct setting. The last other thing I did was install WordPerfect (in order to convert some old files to Word). 

But Outlook has been acting funny for a couple of days, ever since an MS update, which I suspect is the real culprit.  Anyway, thanks Garry!

• Proposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM
• Unproposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM

Garry's solution worked for me, and I only had to go to step 2. 

I opened Outlook as an admin and voila! Fixed!  Not sure what corrupted the file.  The last thing I did in Outlook was change an Auto-Correct setting. The last other thing I did was install WordPerfect (in order to convert some old files to Word). 

But Outlook has been acting funny for a couple of days, ever since an MS update, which I suspect is the real culprit.  Anyway, thanks Garry!

• Proposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM
• Unproposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM

Garry's solution worked for me, and I only had to go to step 2. 

I opened Outlook as an admin and voila! Fixed!  Not sure what corrupted the file.  The last thing I did in Outlook was change an Auto-Correct setting. The last other thing I did was install WordPerfect (in order to convert some old files to Word). 

But Outlook has been acting funny for a couple of days, ever since an MS update, which I suspect is the real culprit.  Anyway, thanks Garry!

Garry's solution worked for me, and I only had to go to step 2. 

I opened Outlook as an admin and voila! Fixed!  Not sure what corrupted the file.  The last thing I did in Outlook was change an Auto-Correct setting. The last other thing I did was install WordPerfect (in order to convert some old files to Word). 

But Outlook has been acting funny for a couple of days, ever since an MS update, which I suspect is the real culprit.  Anyway, thanks Garry!

• Proposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM
• Unproposed as answer by Galaktican Wednesday, November 07, 2012 5:59 PM

I thought I was pass along my findings our IT group had with one our users with this same issue.

Nothing was working for us, resetnavpane, deleting OST, recreating Outlook Profile, checking DNS and Gateway settings, etc.

We use Microsoft Lync in our firm.  Once we closed down the local Lync client on this users computer we were able to get past this error.

I hope someone finds this info useful.

• Edited by Galaktican Wednesday, November 07, 2012 6:03 PM

I thought I was pass along my findings our IT group had with one our users with this same issue.

Nothing was working for us, resetnavpane, deleting OST, recreating Outlook Profile, checking DNS and Gateway settings, etc.

We use Microsoft Lync in our firm.  Once we closed down the local Lync client on this users computer we were able to get past this error.

I hope someone finds this info useful.

• Edited by Galaktican Wednesday, November 07, 2012 6:03 PM

I thought I was pass along my findings our IT group had with one our users with this same issue.

Nothing was working for us, resetnavpane, deleting OST, recreating Outlook Profile, checking DNS and Gateway settings, etc.

We use Microsoft Lync in our firm.  Once we closed down the local Lync client on this users computer we were able to get past this error.

I hope someone finds this info useful.

I thought I was pass along my findings our IT group had with one our users with this same issue.

Nothing was working for us, resetnavpane, deleting OST, recreating Outlook Profile, checking DNS and Gateway settings, etc.

We use Microsoft Lync in our firm.  Once we closed down the local Lync client on this users computer we were able to get past this error.

I hope someone finds this info useful.

• Edited by Galaktican Wednesday, November 07, 2012 6:03 PM

Had similar issues today.  What worked for was to run scanpst.exe, which fixed some errors.  Then I moved all of my Outlook files (*.pst and supporting files) to a SUB-folder inside of C:\Users\<name>\AppData\Local\Microsoft\Outlook

Then I was able to point to my pst folder and it worked.

Seems like it is a permissions error, since the same PST file opens fine from a sub-folder but not from the containing folder.... Odd.

Hi All,

Problem:

I was facing same problem "Unable to open the Outlook window". I am using "Win7 Ultimate SP1", Outlook 2010 is installed. I was trying to run the outlook from Start menu shortcut.

Workaround:

I found this post and tried to run the command given by Sally Tang  but got the error "System cannot find the file path specified". 

Solution: 

I searched the file outlook.exe to find where it is (as per the Sally Tang suggestion) and found in "C:\Program Files (x86)\Microsoft Office\Office14".What I did is "Right click on OUTLOOK.EXE -> run as Administrator" and it is working.

Hope this may help for so

Please check OS compatibility settings in Outlook.exe properties. Works for me when I've cleared compatibility with WinXP in properties of Outlook 2010 in Windows 7.

Hi

http://support.citrix.com/article/CTX133991

I was having the same issue running 32-bit Outlook 2013 on Windows 7 Enterprise 64-bit.

I had no luck with the Outlook.exe /resetnavpane as recommended - same problem.

This has been happening occasionally for about a week, and I had a vague recollection of an error message regarding the Lync2013 add-in.  I have Lync set to start on Windows startup.  

Long story short, I exited Lync (not just closed the window, but REALLY exit), and Outlook started up just fine.

Don't know if this is the same problem, or just the same symptom.  Anyway, I thought I would pass it along.

DBC

• Edited by DBC55438 Wednesday, March 27, 2013 2:36 AM minor edit.
• Proposed as answer by dmathisen Wednesday, April 23, 2014 1:32 PM

I was having the same issue running 32-bit Outlook 2013 on Windows 7 Enterprise 64-bit.

I had no luck with the Outlook.exe /resetnavpane as recommended - same problem.

This has been happening occasionally for about a week, and I had a vague recollection of an error message regarding the Lync2013 add-in.  I have Lync set to start on Windows startup.  

Long story short, I exited Lync (not just closed the window, but REALLY exit), and Outlook started up just fine.

Don't know if this is the same problem, or just the same symptom.  Anyway, I thought I would pass it along.

DBC

• Edited by DBC55438 Wednesday, March 27, 2013 2:36 AM minor edit.
• Proposed as answer by dmathisen Wednesday, April 23, 2014 1:32 PM

I was having the same issue running 32-bit Outlook 2013 on Windows 7 Enterprise 64-bit.

I had no luck with the Outlook.exe /resetnavpane as recommended - same problem.

This has been happening occasionally for about a week, and I had a vague recollection of an error message regarding the Lync2013 add-in.  I have Lync set to start on Windows startup.  

Long story short, I exited Lync (not just closed the window, but REALLY exit), and Outlook started up just fine.

Don't know if this is the same problem, or just the same symptom.  Anyway, I thought I would pass it along.

DBC

I was having the same issue running 32-bit Outlook 2013 on Windows 7 Enterprise 64-bit.

I had no luck with the Outlook.exe /resetnavpane as recommended - same problem.

This has been happening occasionally for about a week, and I had a vague recollection of an error message regarding the Lync2013 add-in.  I have Lync set to start on Windows startup.  

Long story short, I exited Lync (not just closed the window, but REALLY exit), and Outlook started up just fine.

Don't know if this is the same problem, or just the same symptom.  Anyway, I thought I would pass it along.

DBC

• Edited by DBC55438 Wednesday, March 27, 2013 2:36 AM minor edit.
• Proposed as answer by dmathisen Wednesday, April 23, 2014 1:32 PM

I am running Outlook 2013 on Windows 7 Enterprise.

I was running into the same error, "Cannot start MS Outlook.....The set of folders could not be opened..."

I tried about everything that the replies to this thread was suggesting and no go.
Including, the /resetnavpanel & removing/renaming/deleting the .OST files.  Nothing worked...  I was able to modify the configuration and go ONLINE only so that NO cached information was being stored on my machine.  That worked fine.  But even when I went back in and enabled the Cached Settings I got that error again...
Then I saw a post about closing Lync...  
At that time, I had already removed the OST files and Cached mode was turned on.  As soon as I closed Lync and launched Outlook, it created the new .OST file and I'm up and running....

Hope this helps someone!!

I am running Outlook 2013 on Windows 7 Enterprise.

I was running into the same error, "Cannot start MS Outlook.....The set of folders could not be opened..."

I tried about everything that the replies to this thread was suggesting and no go.
Including, the /resetnavpanel & removing/renaming/deleting the .OST files.  Nothing worked...  I was able to modify the configuration and go ONLINE only so that NO cached information was being stored on my machine.  That worked fine.  But even when I went back in and enabled the Cached Settings I got that error again...
Then I saw a post about closing Lync...  
At that time, I had already removed the OST files and Cached mode was turned on.  As soon as I closed Lync and launched Outlook, it created the new .OST file and I'm up and running....

Hope this helps someone!!

• Proposed as answer by Doktor_P Tuesday, July 16, 2013 7:37 AM

I am running Outlook 2013 on Windows 7 Enterprise.

I was running into the same error, "Cannot start MS Outlook.....The set of folders could not be opened..."

I tried about everything that the replies to this thread was suggesting and no go.
Including, the /resetnavpanel & removing/renaming/deleting the .OST files.  Nothing worked...  I was able to modify the configuration and go ONLINE only so that NO cached information was being stored on my machine.  That worked fine.  But even when I went back in and enabled the Cached Settings I got that error again...
Then I saw a post about closing Lync...  
At that time, I had already removed the OST files and Cached mode was turned on.  As soon as I closed Lync and launched Outlook, it created the new .OST file and I'm up and running....

Hope this helps someone!!

• Proposed as answer by Doktor_P Tuesday, July 16, 2013 7:37 AM

I am running Outlook 2013 on Windows 7 Enterprise.

I was running into the same error, "Cannot start MS Outlook.....The set of folders could not be opened..."

I tried about everything that the replies to this thread was suggesting and no go.
Including, the /resetnavpanel & removing/renaming/deleting the .OST files.  Nothing worked...  I was able to modify the configuration and go ONLINE only so that NO cached information was being stored on my machine.  That worked fine.  But even when I went back in and enabled the Cached Settings I got that error again...
Then I saw a post about closing Lync...  
At that time, I had already removed the OST files and Cached mode was turned on.  As soon as I closed Lync and launched Outlook, it created the new .OST file and I'm up and running....

Hope this helps someone!!

• Proposed as answer by Doktor_P Tuesday, July 16, 2013 7:37 AM

I am running Outlook 2013 on Windows 7 Enterprise.

I was running into the same error, "Cannot start MS Outlook.....The set of folders could not be opened..."

I tried about everything that the replies to this thread was suggesting and no go.
Including, the /resetnavpanel & removing/renaming/deleting the .OST files.  Nothing worked...  I was able to modify the configuration and go ONLINE only so that NO cached information was being stored on my machine.  That worked fine.  But even when I went back in and enabled the Cached Settings I got that error again...
Then I saw a post about closing Lync...  
At that time, I had already removed the OST files and Cached mode was turned on.  As soon as I closed Lync and launched Outlook, it created the new .OST file and I'm up and running....

Hope this helps someone!!

Yep, this did it for me with Lync and Windows 8 ENT. Thanks Troy.

Thank you - after trying many other solutions - yours turned out to work for me :)

I am running Office 2003 on a Vista Machine.  What is the fix for the same error in that environment?

Boopathi,

I had similar problem. I fixed with downloading Hotmail connector.

Good luck. Hope this helps.

• Proposed as answer by Cypert Saturday, November 16, 2013 12:58 AM

Boopathi,

I had similar problem. I fixed with downloading Hotmail connector.

Good luck. Hope this helps.

• Proposed as answer by Cypert Saturday, November 16, 2013 12:58 AM

Boopathi,

I had similar problem. I fixed with downloading Hotmail connector.

Good luck. Hope this helps.

• Proposed as answer by Cypert Saturday, November 16, 2013 12:58 AM

All,

     The problem is the data files is defaulted to a non-MAPI type account. Just change the default data file to an outlook or Hotmail account and it will open again

Hope this fixes your problems.

After trying all of the above with no success - this was the fixer. Thanks

i tried your solution, it is great A1 NO1 *****

Thank you so much.

I tried and tried and tried reinstalling, new profiles, etc. They setup just fine, but when I tried to run Outlook 2013 (32-bit) on a Win7Pro-64, no luck.

Finally, I looked in the OST file location and there were about a DOZEN Autodiscover files.  I deleted them and it worked. Could have been the iCloud connector or something else that messed them up, but all is well now.

Ken

My solution was similar to ciaran colgan:  Control Panel --> Mail (32-bit) --> Data Files --> Add (This just creates a new file in which email messages can be stored) --> OK (to the "New Outlook Data File" window, "Office Outlook Personal Folder File (.pst)" Types of storage selection)  --> OK (to the "Create or Open Outlook Data File" window, just accept the default or proposed file name --> OK (to the "Create Microsoft Personal Folders" window, just accept the default Name and Compressible Encryption).

I then started Outlook and it said that I had a corrupted .pst file, it repaired it, and operation returned to normal.  I then stopped Outlook and removed the file that I just created.  Here is how I did so:  In the "Outlook Data Files - Outlook" window, the file that you just created remains highlighted.  You can double click it and look at the Filename field in the "Personal Folders" window.  For me it was called Personal Folders(1).pst.  In the "Outlook Data Files - Outlook" window, click once the file you just created and click the "Open Folder" button.  You will see the file you just created and it is short like 265 kB with today's date. Go back to the "Outlook Data Files - Outlook" window, click once the file you just created to highlight it and then press the Remove button.

• Proposed as answer by dougbert7 7 hours 21 minutes ago

My solution was similar to ciaran colgan:  Control Panel --> Mail (32-bit) --> Data Files --> Add (This just creates a new file in which email messages can be stored) --> OK (to the "New Outlook Data File" window, "Office Outlook Personal Folder File (.pst)" Types of storage selection)  --> OK (to the "Create or Open Outlook Data File" window, just accept the default or proposed file name --> OK (to the "Create Microsoft Personal Folders" window, just accept the default Name and Compressible Encryption).

I then started Outlook and it said that I had a corrupted .pst file, it repaired it, and operation returned to normal.  I then stopped Outlook and removed the file that I just created.  Here is how I did so:  In the "Outlook Data Files - Outlook" window, the file that you just created remains highlighted.  You can double click it and look at the Filename field in the "Personal Folders" window.  For me it was called Personal Folders(1).pst.  In the "Outlook Data Files - Outlook" window, click once the file you just created and click the "Open Folder" button.  You will see the file you just created and it is short like 265 kB with today's date. Go back to the "Outlook Data Files - Outlook" window, click once the file you just created to highlight it and then press the Remove button.

• Proposed as answer by dougbert7 Sunday, May 10, 2015 12:07 AM

My solution was similar to ciaran colgan:  Control Panel --> Mail (32-bit) --> Data Files --> Add (This just creates a new file in which email messages can be stored) --> OK (to the "New Outlook Data File" window, "Office Outlook Personal Folder File (.pst)" Types of storage selection)  --> OK (to the "Create or Open Outlook Data File" window, just accept the default or proposed file name --> OK (to the "Create Microsoft Personal Folders" window, just accept the default Name and Compressible Encryption).

I then started Outlook and it said that I had a corrupted .pst file, it repaired it, and operation returned to normal.  I then stopped Outlook and removed the file that I just created.  Here is how I did so:  In the "Outlook Data Files - Outlook" window, the file that you just created remains highlighted.  You can double click it and look at the Filename field in the "Personal Folders" window.  For me it was called Personal Folders(1).pst.  In the "Outlook Data Files - Outlook" window, click once the file you just created and click the "Open Folder" button.  You will see the file you just created and it is short like 265 kB with today's date. Go back to the "Outlook Data Files - Outlook" window, click once the file you just created to highlight it and then press the Remove button.

Thanks a lot :)

This worked for me.. :D

I had the same problem. Read through, tried the run command, didn't help.

what did help is to change your default PST file (main for contacts and calendar) and then changed it back to the original. it worked directly - easy solution, try it first.

I have tried the command prompt but maybe I am doing it wrong. Our mail folder is on the S drive. Can you help me?

thanks...

hello,

  I was also having the same problem. and I figured as follows.

C: \ Users \ ayvazo.pekyol \ AppData \ Local \ Microsoft \ Outlook \ roamcach to

  I clean it in the files and the problem was resolved.

• Proposed as answer by k0stebek 3 hours 4 minutes ago

hello,

  I was also having the same problem. and I figured as follows.

C: \ Users \ ayvazo.pekyol \ AppData \ Local \ Microsoft \ Outlook \ roamcach to

  I clean it in the files and the problem was resolved.

• Proposed as answer by k0stebek Friday, February 06, 2015 8:47 AM

hello,

  I was also having the same problem. and I figured as follows.

C: \ Users \ ayvazo.pekyol \ AppData \ Local \ Microsoft \ Outlook \ roamcach to

  I clean it in the files and the problem was resolved.

• Proposed as answer by k0stebek Friday, February 06, 2015 8:47 AM

I had same problem and I followed the above instructions and it resolved my issue. Good .

Thanks

Seeni

Thank you khaw!  I'd spent days searching for a solution.  This one is incredibly simple and fixed my issue.  I suspect it would fix at least half of all issues for those who receive this error.