I just upgraded my win7 Pro x64 desktop to Win8 Pro x64. Upgrade was surprisingly smooth.

Now it would be nice to see some of the new features actually work!!

I try to double click or use disk image tools to mount ANY iso file (local or on network), and all I get is a messagebox ..

Title: Couldn't Mount File

Message: You don't have permission to mount the file

Buttons: OK

I am the domain admin and local admin for the machine.

I tried running Explorer.exe as Administrator.

No difference.

That's a handy feature?

Help?

Other handy feature so far today is trying to connect the (%!#@# metro) Mail app to my Exchange 2003 account. Not possible apparently. Works in Outlook 2010 and Windows Phone 7, but not Mail.

So far, this is another Vista.

Check if you have suitable permissions on NTFS (Properties of the file -> Security). I've had an issue that looked similar and my user hasn't got the permissio

Same issue here. Any r

Furthermore, you can also try to disable UAC for test. And check if you have permission on this ISO file.

Or you can create another administrator account and login to see if the same issue occurs.

Regards,

Leo   Huang

Valo and others,

I remove UAC as suggested by Leo, unsuccessfully. I downloaded Virtual CloneDrive 5.4.5.0 (free application) from the following site http://download.cnet.com/Virtual-CloneDrive/3000-20432_4-11164084.html

I got the exact same error, after looking for the solution and finding nothing i accidently saw that the ISO had mounted properly.

In my case I can just ignore the error.

Didn't find this "solution" on the web... Hope it helps!!

• Proposed as answer by OskarF Friday, September 14, 2012 5:47 PM
• Unproposed as answer by OskarF Friday, September 14, 2012 5:47 PM
• Edited by OskarF Friday, September 14, 2012 5:50 PM emphasis
• Marked as answer by Bill Kuhn Friday, September 14, 2012 6:01 PM

Hah! You are right OskarF!

I hadn't noticed that the ISO was showing as a drive after trying to mount it and getting the error. I just tried it and it does in fact show up as a drive after the error.

Apparently the error message is a bug but the mounting functionality still works!

Thank you!

• Proposed as answer by Carlos A. Moreno Wednesday, July 03, 2013 9:14 PM
• Unproposed as answer by Carlos A. Moreno Wednesday, July 03, 2013 9:14 PM

Thank you all, I didn't notice about the new mounted drive, but is working, regardless the message error.

I got the exact same error, after looking for the solution and finding nothing i accidently saw that the ISO had mounted properly.

In my case I can just ignore the error.

Didn't find this "solution" on the web... Hope it helps!!

• Proposed as answer by Andre.ZieglerMicrosoft community contributor, Editor Thursday, November 15, 2012 9:39 PM

I did receive this same error and yes the .ISO did mount anyways.

What I noticed is that I already had another .ISO Mounted when I got this error. When I right clicked on the one that was already mounted and selected eject,  then mounted the one I now wanted, the error went away.

You can mount more than one .ISO at a time. At least until you rum out of drive letters.

P.S. This ability to mount .iso files is actually something I am very happy to see in Win 8. Some may say "about time" I say "Good Job"

• Proposed as answer by DeveloperMan28 Thursday, November 29, 2012 4:23 PM

Just want to add that this error ("You don't have permission to mount the file") also occurs when trying to mount VHDX files as well (and presumably VHD files--haven't tried those yet). The behavior is similar, but depending on the state of your VHDX file, it may be even less apparent that it's actually succeeding.

For example, if you just created the file and haven't created a volume on it yet, it looks like nothing happens--no drive letter in Explorer, nothing. Worse yet, if you try to do anything else to the file--delete it, attach it to a VM, etc.--it produces an error saying that the file is in use. However, if you go into Disk Management, you'll see an uninitialized disk there. You can then initialize the disk, create a volume, go on your merry way... and get the error message again the next time you try to mount the VHDX file.

I hope this saves some frustration for someone. I couldn't find any posts about this error with VHDX files specifically, but your answer regarding ISO files helped me figure out what was happening.

• Proposed as answer by rhelmer Friday, February 15, 2013 4:41 PM

Are you getting Filter Manager events when this error occurs?  I am also seeing:

Filter Manager failed to attach to volume '\Device\HarddiskVolume(n)'.
This volume will be unavailable for filtering until a reboot.
The final status was 0xC03A001C.
EventID = 3

Also, it appears the error dialog reported in this thread (and event 3) does not occur when the VHD being mounted was created in Windows 7.

I do not currently have a problem with ISO files, but I did see a spurious error a while back which I fixed by excluding a range of mounted ISO drive letters from AnyDVD.

• Edited by Paul Coddington Sunday, March 03, 2013 12:31 PM

If you have a flash media reader, try reassigning the letter(s) in such a way as to leave a 'lower' letter available to be used for mounting the ISO. For some reason it doesn't like coming after them.

For example, with this layout, mounting an ISO auto assigns it the drive letter F:, causing the error (drive still functions):
C: - HD
D: - DVD
E: - Flash
F: - ISO (auto assigned)

After ejecting the ISO (F:), reassign the Flash drive with the letter F: Now mount the ISO, and it will be assigned E: without error.
C: - HD
D: - DVD
E: - ISO (auto assigned) 
F: - Flash

S 

• Edited by Shane Snyder Friday, March 08, 2013 7:27 AM clarification
• Proposed as answer by Andy 'The ZMan' DunnMVP Sunday, March 31, 2013 5:11 AM

I did not have any problems with this Before. Just doubleclick an .iso and it would be mounted. But now I experience it like you all.

The difference is my computer was in a workgroup before, and I recently converted it to a domain client. Did you all with problems have domains too?

Thanks rhelmer! I got the error while working with a vhdx file. Yours was the only comment in this thread that helped me figure out my problem! Indeed someone gave me a vhdx file with uninitialized disks. So, I get the error, no drive letter, cannot delete the vhdx file and can see the uninitialized disk in Disk Management. Right on bro!!

Balaji

None of the above solution worked for me.

Difference might be that my ISO file was on the network drive. Copied the file on local drive and mounted from there...

Worked like a charm (no error message)

This is not a bug, it's security. Right click the ISO-file and select Properties. At the bottom of the General tab you probably see the text "This file came from another computer and might be blocked to help protect this computer"

Just click the button Unblock and click Apply and/or OK. After the unlock there will be no error message anymore.

Well I've had this problem for as long as I've had Windows 8.  I've just ignored it because although I get the message that I can't mount the file, the file mounts just fine.   

I just tried your suggestion and unblocked an ISO and I still get the message that I can't mount the file.

WD

In my case, I run dual OS  window7 and window 8. In win 7 I set the security for standard user "read & write" on Windows 8 partition, since I dont want those who normally use win 7 mess up win 8 system files. That move made the "unable to mount" error appear on window 8, and standard local user of win 8 cannot run VS 2013.

Turn this off and everything work fines now.