Outlook 2007 keeps asking for username and password
We have a new exchange 2007 SP1 server but occasionally the outlook clients will ask for the username and password. Is this a bug or does anyone have a fix?
September 8th, 2008 4:14am

Hi, In order to clarify the current issue, please answer me the following questions: 1. Does this issue happen on every users or some specific users? 2. How Outlook connect to Exchange? RPC over Http or TCP/IP? 3. What were you doing when the authentication window pop up? E.g. Youre visiting a public folder or something else. I await your reply. Thanks, Elvis
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September 9th, 2008 10:42pm

Hi, I have the same problem:Exchange 2007 SP1Outlook 2007 + all updatesOutlook setup using the auto discover.When user starts outlook, it ask for password. It connects, and then ask for the password again. It keeps asking for the password.Disabled Outlook over RCP/HTTP with no luck.Set authentication fron NTLM to Basic, with no luck. Created a new outlook profile, no luck.It doesn't happen for all users, only some. But, all users are set up the same. Using the same computer image.This is happening with several customers.
December 5th, 2008 4:00am

I am having the same issue. I have Exchange 2007 SP1 in a CCR environment. We just applied Rollup 5 yesterday and now, when anyone in my organization attempts to connect through Outlook, they receive a login dialog. It's odd because this dialog box is asking the user to authenticate through the Client Access Server and not to the Mailbox Server. Any thoughts would be greatly appreicated.
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January 28th, 2009 9:51am

anybody find a fix for this? My users are starting to get cranky.
February 12th, 2009 11:38am

Same issue here. Somebody have an answer to the problem?
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May 26th, 2009 5:57am

Same issue except all Outlook 2007 clients always ask for passwords. Started happening after upgrading the server (SBS2008) to SP2 two days ago.
May 29th, 2009 4:09pm

Are you only using Exchange 2007 or do you have a combination of servers?
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May 29th, 2009 4:36pm

There is an old SBS2003 server with Exchange 2003 that is currently off. It's been a month or so since it crashed and haven't gotten to taking it off AD and Exchange configuration yet. HoweverOutlook started asking for a passwords only in the last two days. All mailboxes, public folders were moved to Exchange 2007.
May 29th, 2009 4:41pm

I have rebooted all servers mutliple times. however I did notice that if I turn off RPC over HTTP it stops the prompting.
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June 25th, 2009 10:01am

Hi I'm having the same issue with a few of the users.These users are getting the prompt every few minutes. The dialog box asks the user to authenticate through the Client Access Server and not to the Mailbox Server. Thanks
August 17th, 2009 7:08am

For us it was a simple storing of old password in Vista. Now it asks just once for a username and password
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October 9th, 2009 8:29am

I installed Exchange 2007 SP2 on Sunday, made no configuration changes and now also have the problem where some users repeatedly get a log-in box appearing asking them to authenticate against the Client Access Server. Even if they get the OS to remember the password they have entered after a period of time the box re-appears. Outlook 2007 isn't configured for Outlook Anywhere. Manually downloading the OAB, opening OOF and checking availability all seem to work. I've run Connection Status and can only see Outlook communicating with the mailbox server, the DC(GC) and the Public Folder server. Even when re-authenticating against CAS nothing seems to appear in this window. I've also run the Test Email Configuration and nothing looks untoward. Creating a new Outlook profile doesn't alleviate the problem. Does anyone have any further ideas? Many thanks,
November 24th, 2009 9:58am

There is an old SBS2003 server with Exchange 2003 that is currently off. It's been a month or so since it crashed and haven't gotten to taking it off AD and Exchange configuration yet. HoweverOutlook started asking for a passwords only in the last two days. All mailboxes, public folders were moved to Exchange 2007. In my case, it is "MSExchangeMailboxAssistants" service that fails to start and I have yet to figure out why.
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November 24th, 2009 6:50pm

Ian:I'm having the exact same problem. I am running Windows 7, Outlook 2007 (Office 2007 pro) and I'm connecting to our Exchange Server 2007 which is part of Small Business Server 2008 (running in a virtual Hyper-V environment).Everything was fine until this last round of updates was installed and after reading this thread I know at least 1 other person is having the same problem. Namely; Outlook 2007 on a client keeps asking for the password to the remote access URL. If I simply click cancel it's OK for a few minutes. Entering the password and clicking the save PW box does no good. Sometimes clicking cancel results in another dilog box asking the same thing and I may have to click cancel several times to get it to go away for a while. Occasionally Outlook may actually go into a mode where it says it needs the password typed so I click the link which brings the dilog back but simply clicking cancel will make Outlook connect again.Possibly MY problem could be related to a problem with the Virtual Machine file for the server. I had to recreate the file but since the Virtual Hard Drive was OK there wasn't any problem rebooting the server. HOWEVER, since I had ro recreate the Hyper-V environment the server sawe a different Virtual NIC. I had to configure the NIC with the same IP as before etc...This all happened right around the time of the updates so I'm not sure of the actual cause being the updates, the NIC change or something else.Did yourecently change a NIC on your server?EdwinFreehold Consulting
December 14th, 2009 7:40pm

Edwin: I've not changed anything in the server's hardware. The only thing that changed between the days when everything worked fine and now is a few updates that were installed on the server, but they were SBS 2008 updates, not Exchange 2007. I've noticed that sometimes, instead of asking for username and pass, Outlook shows a warning about the Security Certificate not matching the server name and asking if you want to continue. If you continue you can work for about 10 or 20 minutes before it asks for user and pass again. It's not preventing the people in the company to do their job, but it is quite bothersome. Any help would be appreciated. (And keep in mind I'm a total rookie in servers) Thanks Ian
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December 15th, 2009 9:56am

I have installed the cert but that shouldn't be necessary in my case because the server cert is signed by GoDaddy. I don't get any warning when accessing remote.myserver.com.Ian:Exchange is so interdependant on the AD system that it is very much possible that a security update could have very well caused it even though the update wasn't specifically to Exchange.I'm thinking that the problem IS related to the December updates. Hopefully more will chime in and Microsoft will take notice and investigate. There's probably a troubleshooting proceedure in Technet or the KB. Just need to find the time to go looking.EdwinFreehold Consulting
December 16th, 2009 2:43am

I had an issue similar to this. Win2k3 Ex07. All of my Outlook 2007users were getting prompted over and over for the username andpassword. It wasn't checking the certificate that they had installedvia internet explorer. To fix the problem, I opened IIS on theExchange server and checked the following directories under thedefault website (the root site(default web site), oab, autodiscover).Under the directory security tab, click Edit in the SecureCommunications section. I had the require SSL checked and the 128bitencryption, but under Client Certificates, it was set to ignore. OnceI changed that to Accept for each of the folders, stopped and startedIIS, I stopped being prompted all the time for credentials. Hopefullythis will help someone in the future. Just confirmed fixed for client!!!-IL Joy Joy Joy!!!The last few days have been a nightmare of complaints. This month's update definately broke a perfectly workingSBS 2008/Exchange 2007/Outlook 2007 authentication system, both over RPC and regular. Just keeps asking for password! Tried a million things just like the others, no joy. Went into IIS Manager, opened SBS Web Applications, Select Autodiscover, double click SSL settings(you have to scroll down to see it), check Accept instead of ignore or require, and Apply. I repeated for owa, remote, Rpc, RpcWithCert (possibly don't have to do all these). Restarted Web Publishing and Joy Joy Joy!!!Thank you Longbow2!- MikeBTexas
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December 17th, 2009 2:34pm

Hey.Thanks a lot - worked for me !!! And I tried (almost) ANYTHING !!!!Regards Anders
December 22nd, 2009 11:19am

Thanks a lot. It worked quite nicely (at least for now). Regards. Ian.
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December 22nd, 2009 5:17pm

Thanks to all you gentlemen.... You were dead on. I had the exact same issues.... Using SBS2008 with the integral Exchange 2007. All my clients, whether inside my firewall or outside, kept prompting for creds. Your solution seems to have solved my issues. All I did was go into my IIS, change the OAB and Autodiscover sites to accept credentials in SSL, and "Voila!", it seems to start working again. Now all I need do is test this with my new MacBook Air after Christmas Day.... That will be my present to myself, and it is all wrapped up, so I can't check it until after Santa gives it to me.... ;)Thanks a million.Rick
December 23rd, 2009 7:23pm

I applied the settings above and after several days I'm happy to report that I have had absolutely NO popups asking for a un/pw.Thanks everybody.EdwinFreehold Consulting
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December 28th, 2009 5:56pm

Just so you know, changing Autodiscover on my SBS 2008 server to accept client certificate has made autodiscover stop working for Outlook 2007 internal/external clients because it wants to provide client certificate. I have resolved the problem by changing the other directories as mentioned, and leaving Autodiscover on ignore. Cheers, Ross (Though, Out of Office Assistant is failing to work from within Outlook 2007, will keep working on this.. may be related to Autodiscover but seems unlikely. I have applied the .NET Framework 2.0 hotfix 952883 (http://support.microsoft.com/kb/952883) for System.xml.dll to rectify the parameter problem that was plaguing some people earlier in the year, but this has not fixed anything and I doubt it was the root cause of it not working regardless.) -- Edit -- FIX To OOFA not working. The EWS directory cannot be set to accept client certificates else out of office assistant does not work in Outlook 2007 clients internally and externally. By changing the Virtual Directories named "Autodiscover" and "EWS" as listed under SBS Web Applications in IIS7 Manager to "Ignore" Client Certificates in SSL settings, two problems have been resolved that were created by implementing the above listed changes for fixing the recurrent prompting of username/password. Namely, Autodiscover works again, and Out of Office Assistant as well. Microsoft really dropped the ball on that patch! I have had no shortage of problems since I rebooted to complete installation on the 23rd. Under SBS web apps, I changed them all to accept client certificate (that didn't already have require and had SSL ticked), and now I have changed Autodiscover and EWS back to ignore. Everything seems to be hunky dory finally!
January 4th, 2010 3:30am

Great! Thank you! I had the same problem until this post ;)
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January 10th, 2010 8:29pm

Hi DJ,1. Get the internet connected and on the VPN2. Make Sure Outlook is close3. Then go to start/settings/Control Panel4. Double Click on Mail/Then E-mail accounts5. On the email tab highlight your username(Exp. sachin@msft.com) and hit Change6. Then Click on More Settings/Connection/Exchange Proxy Settings7. Then unclick the “Only connect to proxy servers that have this principal name in their certificate” the msstd:webmail.covad.com box will go grey. 8. Then hit OK/Then Apply/Then OK/Then Cancel/Then Close/Then Close9. Open Outlook and Put in Domain\(Your username) and password. Put check Mark on remember my password.I am sure this will resolve the above issue. Have a good day, Sachin Shetty| MCP|MCTS|MCITP| Doesn't work for me. Also, I need these settings on my laptop.This is a server problem not an outlook problem.EdwinFreehold Consulting
January 14th, 2010 1:52am

I've got the exact same problem after updating, sbs2008, exchange 2007 sp1, and outlook 2007 clients only.I've tried the above steps, when i set the auto discover to allow, the username and password prompt problem goes away, but then the out of office assistant then stops working. When I change it back, out of office assistant starts working, but then the user name prompts appear. I've got the EWS set to ignore as suggested above by Ross C. Is there something else I’m missing?Cheers
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January 19th, 2010 1:16am

I solved my problem by upgrading to Exchange 2007 SP2.http://www.microsoft.com/downloads/details.aspx?FamilyID=ffd2fe61-9278-489e-9b96-3816394c9cb6&displayLang=enEdwin Freehold Consulting
January 20th, 2010 11:00pm

The problem related to MS Small Business Server 2008 is discussed here also:https://connect.microsoft.com/sbs08/community/discussion/richui/default.aspxnews.microsoft.com/microsoft.public.backoffice.smallbizSeems like Rollup 9 may be another fix. I will try it later. Best regards Bjorn
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January 21st, 2010 7:12am

Help Please. I am having the same problem with outlook 2007. It got to the point where it would never log me in and I had to delete the accounts and start over. Then after a few hours its starts up again. This is the same old problem I had with my old laptop and Outlook 2003. After searching and searching Microsoft said too bad. This is a flaw and there's nothing they can do about it. This is happing to a lot of people. Also happens on my POP accounts. Someone please help as Microsoft doesn't give a damn. Rich
February 10th, 2010 9:24pm

Hi guys, i have been struggling with this issue myself and i have tried all the options on this page and none of them seem to fix the issue. im getting both issueskeeps prompting for credentials.and OOF does not workAuto discover also not working. outlook upgraded to sp1 exchange 2007
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February 11th, 2010 12:10pm

Have you tried this? http://support.microsoft.com/kb/956531 Tom
February 15th, 2010 10:28am

Thanks a lot! That solved this irritating problem!
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February 15th, 2010 5:51pm

I had an issue similar to this. Win2k3 Ex07. All of my Outlook 2007users were getting prompted over and over for the username andpassword. It wasn't checking the certificate that they had installedvia internet explorer. To fix the problem, I opened IIS on theExchange server and checked the following directories under thedefault website (the root site(default web site), oab, autodiscover).Under the directory security tab, click Edit in the SecureCommunications section. I had the require SSL checked and the 128bitencryption, but under Client Certificates, it was set to ignore. OnceI changed that to Accept for each of the folders, stopped and startedIIS, I stopped being prompted all the time for credentials. Hopefullythis will help someone in the future. Just confirmed fixed for client!!!-IL Joy Joy Joy!!!The last few days have been a nightmare of complaints. This month's update definately broke a perfectly working SBS 2008/Exchange 2007/Outlook 2007 authentication system, both over RPC and regular. Just keeps asking for password! Tried a million things just like the others, no joy. Went into IIS Manager, opened SBS Web Applications, Select Autodiscover, double click SSL settings (you have to scroll down to see it), check Accept instead of ignore or require, and Apply. I repeated for owa, remote, Rpc, RpcWithCert (possibly don't have to do all these). Restarted Web Publishing and Joy Joy Joy!!!Thank you Longbow2!- MikeBTexas Thanks guys!! Awesome fix! worked for me!!
March 31st, 2010 9:28pm

"Went into IIS Manager, opened SBS Web Applications, Select Autodiscover, double click SSL settings (you have to scroll down to see it), check Accept instead of ignore or require, and Apply." Did this on just that folder, fixed the problem. Thanks!
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May 4th, 2010 9:51am

God Bless you JerSea This has worked for me! This Post was make on the Wednesday, January 20, 2010 10:00 PM http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/383d130e-869f-4fce-9502-8b340904b0ba Thank you JerSea This solved the probklem for me: IIS Mgr on SBS 2008 / - / SBS Web Applications / - SSL Settings / Client certificates - Stop / Start web server after changing settings: Autodiscover: Ignore EWS: Ignore OAB: Accept *) owa: Accept *) Rpc: Accept *) RpcWithCert: Accept *) *) All these have to be Accept to get rid of login box Thanks again Troy
May 9th, 2010 1:02am

Dear All, I have the same problem. I'm using all windows 2008 server as: - Windows server 2008 standard as ADDS - Windows Server 2008 Enterprise with Exchnage Server 2007 as Hub and CAS - 2 Windows Server 2008 Enterprise with Exchange Server 2007 cluster (CCR) - Most of Clients 90% running with Windows XP SP3 with Microsoft Outlook 2007 When user starts outlook, it ask for password. It connects, and then ask for the password again. It keeps asking for the password. Do you have any solution to help me? Khemarin
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June 7th, 2010 4:01am

Well I have come accross this now twice and what I have done to fix the problem is as follows: for domain connected IIS Mgr on SBS 2008 / - / SBS Web Applications / - SSL Settings / Client certificates - Stop / Start web server after changing settings: Autodiscover: Ignore EWS: Ignore OAB: Accept *) owa: Accept *) Rpc: Accept *) RpcWithCert: Accept *) *) All these have to be Accept to get rid of login box For Exchange over HTTP I always have to do the following. In Windows on the client computer where I have outlook installed I have to open Network credentials manager and add a key for server\username with their network password. for some reason when using http exchange it wants to authenticate with the CAS server.
June 7th, 2010 9:56am

All the answeres (Actually, I skipped over about 1/4 of them towards the end) were of no use to me. I googled some more & THIS finally worked: 1: Open Windows explorer. copy this into the address bar: %userprofile%\AppData\Roaming\Microsoft\Protect 2. Rename the S-1-5-21- ... folder by adding "OLD" to the end. 3.Re-open Outlook, and re-type you password and confirm that box. A new filder S-1-5-21.... will appear with the corrected, non-corrupt information. 4. Problem should be fixed. It worked great for me & was really simple. Thanks to "How-to Geek"
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June 15th, 2010 10:11am

I have yet another way around this. If you find an error in the eventviewer. telling you that search can't access mapi:{S-1-1...}, then you should recreate the search indexes in the controlpanel. This solved the issue for me.
June 30th, 2010 6:55am

Joy Joy Joy!!! The last few days have been a nightmare of complaints. This month's update definately broke a perfectly working SBS 2008/Exchange 2007/Outlook 2007 authentication system, both over RPC and regular. Just keeps asking for password! Tried a million things just like the others, no joy. Went into IIS Manager, opened SBS Web Applications, Select Autodiscover, double click SSL settings (you have to scroll down to see it), check Accept instead of ignore or require, and Apply. I repeated for owa, remote, Rpc, RpcWithCert (possibly don't have to do all these). Restarted Web Publishing and Joy Joy Joy!!! Thank you Longbow2! - MikeBTexas I was dubious to try this fix, as I couldnt see the relevance to if I wasnt using RPC over HTTP, however it fixed it,, Thanks, This was a brand new SBS buid and a Brand new desktop testing against it,, if I wasnt nald already i would have been pulling my hair out :-) Thanks
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July 23rd, 2010 4:41pm

Same SBS 2080 / Outlook 2010 on a TS , probably worked for me too ! ( need to check the PC's in the morning ) How did you get to IIS / SSL ??? Would have never crossed my mind to look there.
July 28th, 2010 3:25pm

All the answeres (Actually, I skipped over about 1/4 of them towards the end) were of no use to me. I googled some more & THIS finally worked: 1: Open Windows explorer. copy this into the address bar: %userprofile%\AppData\Roaming\Microsoft\Protect 2. Rename the S-1-5-21- ... folder by adding "OLD" to the end. 3.Re-open Outlook, and re-type you password and confirm that box. A new filder S-1-5-21.... will appear with the corrected, non-corrupt information. 4. Problem should be fixed. It worked great for me & was really simple. Thanks to "How-to Geek" Didn’t work for me, but in the ‘Protect’ folder there is a file called ‘CREDHIST’ which is a backup of credentials. I deleted the whole ‘Protect’ folder, opened Outlook and entered my password, ticked the ‘remember’ box and now my password is saved.
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August 5th, 2010 4:28am

All other users in the company could access mails etc. so there was no problem there. I could ping the server from every machine and resolve it by name. so no problem there. Outlook kept asking for username password again and again. It was behind sonicwall but then its just a VPN connection. The only changes that i did after researching on the problem was Went to Accounts Settings-> Change -> More Settings -> Security -> Logon network security-> Password Authenticaion NTLM That solved the whole problem. - - Never Jump to conclusion----
August 7th, 2010 6:04am

On our newtork the issue seemed be caused by delay in communication between exchange and outlook. The issue was resolved by unchecking the "Encrypt data between Microsoft Outlook and Microsoft Exchange. In Outook go to File-> Accounts Settings-> Change -> More Settings -> Security->uncheck the above.
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January 4th, 2011 12:54pm

Hyper-V / SBS 2008 - Exch 2007 VM / Win 7 - Outlook 2007 VM Same problem here after restarting SBS 2008 for upgrades (annoying login box popping up after starting Outlook and also other times). This solved the problem for me: IIS Mgr on SBS 2008 / - / SBS Web Applications / - SSL Settings / Client certificates - Stop / Start web server after changing settings: Autodiscover: Ignore EWS: Ignore OAB: Accept *) owa: Accept *) Rpc: Accept *) RpcWithCert: Accept *) *) All these have to be Accept to get rid of login box Best regards Bjorn We had this problem after installing some SBS2K8 updates last week After trying multiple suggestions, applying SP3 on Exch2K7 we tried this solution and it worked! Thank you for your help. D
January 19th, 2011 5:41pm

Hyper-V / SBS 2008 - Exch 2007 VM / Win 7 - Outlook 2007 VM Same problem here after restarting SBS 2008 for upgrades (annoying login box popping up after starting Outlook and also other times). This solved the problem for me: IIS Mgr on SBS 2008 / - / SBS Web Applications / - SSL Settings / Client certificates - Stop / Start web server after changing settings: Autodiscover: Ignore EWS: Ignore OAB: Accept *) owa: Accept *) Rpc: Accept *) RpcWithCert: Accept *) *) All these have to be Accept to get rid of login box Best regards Bjorn We had this problem after installing some SBS2K8 updates last week After trying multiple suggestions, applying SP3 on Exch2K7 we tried this solution and it worked! Thank you for your help. D Worked on the password error but it made Outlook over http from extern computers not connect annymore. Strange is that outlook over http from computers on internal lan still works as they should. I tried this before the weekend and when i return at work today i also can see the Windows server backup also has halted. I changed back all the SSL settings and removed the update KB2412171 for Outlook. and that did the trick.
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January 31st, 2011 3:25am

This seemed to work for me and my SBS 2008/Exchange 2007 is on SP3. Thanks!!!MCP SBSC
February 1st, 2011 7:32pm

I was pretty happy with the fix of changing the SSL stuff and then i too realized that outlook anywhere was broken. I removed the patch from an offending pc and set the iis perms to the state that a new exch10 server had them but wanted to verify the default perms on the exch07 directories if someone has one that back to "default". Thanks in advance.
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February 15th, 2011 4:54pm

Outlook 2007 Credential Prompts in Small Business Server 2008 - The Official SBS Blog - Site Home - TechNet Blogs: http://blogs.technet.com/b/sbs/archive/2010/02/16/outlook-2007-credential-prompts-in-small-business-server-2008.aspx
February 23rd, 2011 5:45pm

Hi, In order to clarify the current issue, please answer me the following questions: 1. Does this issue happen on every users or some specific users? 2. How Outlook connect to Exchange? RPC over Http or TCP/IP? 3. What were you doing when the authentication window pop up? E.g. You’re visiting a public folder or something else. I await your reply. Thanks, Elvis I am the only user of this pc.How do i check outlook is connected to the exchanve.I thinm its wireless.I just booted up from last night.
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February 25th, 2011 12:52pm

One more thing to try. I noticed that when Outlook kept prompting for a password I was finding 401 errors in my IIS log files with the client of BITS requesting the address book via /OAB. So, I enabled Anonymous Auth for that direcotry in IIS and granted everyone Full Controll on the physical directory. That seems to have enabled my Outlook 2010 client to be able to download the offline address book. As an alternative you could always remove the Download Address Book from the Send/Receive Group settings so that Outlook doesn't try to sync the address book all the time.
March 3rd, 2011 2:13pm

I have a client who has the same problem. They have applied this fix but now complain of exactly the same with rpc over http not working. they also cleverly did not write down the original ssl settings for the directories that changed. Can you please list what the default settings are before change so that I can take them back to step one as I cannot find them anywhere. Cheers M
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March 22nd, 2011 9:35am

There are a couple of reasons why this could be happening, I have outlined them in my blog post here: http://demazter.wordpress.com/2010/02/09/outlook-continually-prompting-for-username-and-password-2/ Another potential cause is the authentication setting used on Outlook & exchange, if they do not match then the same problem will be caused when using RPC-HTTPS or Outlook Anywhere, see my blog post here: http://demazter.wordpress.com/2010/11/09/outlook-prompting-for-username-and-password-when-using-exchange-2010/ Whilst a 3rd part SSL Certificate is not a requirement, it can save a lot of problems when using RPC-HTTPS, and for the sake of $89 for a signed certificate from http://www.exchangecertificates.com is it really worth the hassle? demazter http://demazter.wordpress.com http://www.demazter.co.uk
March 28th, 2011 3:32am

Go to your account setting, select the account where the problem exists and use the option 'change', 'Go to connection tab' and select 'Exchange Proxy settigs' then change the 'Proxy Authenticationation Settings' to 'Basic Authentication'
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April 9th, 2011 12:12am

Hi, We have an Exchange 2010 (SP1 rollup 3v3) environment with 2 CAS/HUB with NLB and 2 MAILBOX with DAG enabled. Only some users were having this issue. All of them have Windows 7, but not all Windows 7 users were having this... I though it should be something related to OAB or Outlook Anywhere. Prompt for credentials appeared only when using cached mode. After confirming NTLM were configured on both sides (CAS and Outlook), I finally found a solution for this: http://support.microsoft.com/kb/956531/en-us Although Office SP2 was installed on the computers showing this annoying prompt, I appied the "Fix it for me" session of this article and BUM! Problem solved. After digging further I found that setting UseWindowsUserCredentials value to 1 is just what you need. I hope that helps...
June 22nd, 2011 12:28pm

Hyper-V / SBS 2008 - Exch 2007 VM / Win 7 - Outlook 2007 VM Same problem here after restarting SBS 2008 for upgrades (annoying login box popping up after starting Outlook and also other times). This solved the problem for me: IIS Mgr on SBS 2008 / - / SBS Web Applications / - SSL Settings / Client certificates - Stop / Start web server after changing settings: Autodiscover: Ignore EWS: Ignore OAB: Accept *) owa: Accept *) Rpc: Accept *) RpcWithCert: Accept *) *) All these have to be Accept to get rid of login box Best regards Bjorn It works! Thank you so much!
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September 16th, 2011 5:37am

In my experience these pop ups are always related to issue with the network or iis settings. when i ran into this issue, it was an issue with the F5 load balancer. f5 had a feature called oneConnect profile. i had to turn that off to get this working.Z-Hire -- Automate IT Account creation process ( AD / Exchange / Lync ) Z-Term -- Automate IT account termination process ( AD / Exchange )
September 16th, 2011 11:48am

Ok, I just recently came across an ANNOYING situation involving outlook 2007 and exchange 2010. I thought I would post here in case anyone else had this issue! We recently experience outlook prompting us for login boxes... We restarted the computers and then outlook could not start at all, throwing off a message about not connecting to mail folders... I spent 5 hours on this issue and could not figure out why! To make a VERY LONG STORY short, be sure to check the services running on the server. Sort them by start type (automatic, manual, etc.) and make sure that all the automatic services are running, especially in exchange! The issue turned out being the "Microsoft Exchange RCP Client Access" service not running! Hope this helps a fellow tech guy out there! Joe Cap I wish Microsoft had better way to handling these credentials pop ups. Now that we've deployed Lync, we get credential pop up whenever we sign on the client. To endusers, this make it seems like application is broken!!!! Z-Hire -- Automate IT Account creation process ( AD / Exchange / Lync ) Z-Term -- Automate IT account termination process ( AD / Exchange )
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September 22nd, 2011 9:13pm

I replaced quotation marks (") by hash signs (#) in my password - it helped in my case - maybe quotation marks were misundertood (deleted) first, but when username/password were asked again, they weren't deleted. JR
December 2nd, 2011 5:39am

Its very simple.... Open Outlook Go to Tools --> Options Inside Options --> Click on Mail SetUp --> click on Send/Receive A new pop up window opens Double click on All accounts --> one more window is opened. Inside this new window all the mail accounts appears. Please select the desired one and tick on remember password and give your password. Thats It. NOTE: Remember password checkbox is disabled when you try to open this from Account Settings.
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December 22nd, 2011 1:30am

5 hours is just a tiny fraction on the time of spent trying to solve this problem. This was my first SBS2011 migration and all went GREAT except for this problem. I learned a LOT about certificates and authentication Including how to use the Exhange Power Shell to run diagnostics and change settings. I've literally lost sleep over this problem. I've been up all night troubleshooting and trying EVERYTHING I've found related to this issue and trust me, there's plenty of material out there addressing this problem and many others that sound exactly the same. All of that for a silly service startup issue. Well, thank you for taking the time to post that Joe! No way of telling how many more hours of impatient end users you saved me from. Thanks again. Nathan
April 2nd, 2012 7:29am

The exact same thing happened to all my clients who had Outlook 2007 newly installed and i followed your recommendation and it worked!!! Thanks!
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April 17th, 2012 5:57am

Here is the fix: http://itswapshop.com/tutorial/how-fix-outlook-2007-keeps-prompting-username-password-when-using-outlook-anywhere
September 12th, 2012 9:21pm

There are a lot of good suggestions here. One other thing for people to check is this: Make sure there isn't another app or device trying to log in to that same account. Ran into this problem some time ago, tried many of the suggestions already mentioned here with no luck. It turned out the user was synching his phone to the exchange account. The phone had the wrong password, but since it kept trying over and over, it would lock the account, which cause outlook to pop up the authentication window. The user was still able to work, as long as he didn't lock the workstation or logout, that window wouldn't go away. Once we fixed his phone, no more problems. Just something else to check
Free Windows Admin Tool Kit Click here and download it now
September 14th, 2012 1:19pm

I have had the same issue. Ingram link is the way to go: http://itswapshop.com/tutorial/how-fix-outlook-2007-keeps-prompting-username-password-when-using-outlook-anywhere http://www.hotfixcomputers.com.au
September 15th, 2012 8:45am

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