Windows Server could not mount ISO files: Here’s how to fix it

by Milan Stanojevic
Milan Stanojevic
Milan Stanojevic
Windows & Software Expert
Milan has been enthusiastic about technology ever since his childhood days, and this led him to take interest in all PC-related technologies. He's a PC enthusiast and he... read more
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According to some users, it seems that Windows Server could not mount ISO files. This issue is affecting many users, and here’s what one dissatisfied user said about this issue on TechNet Social:

For some reason I cannot mount an ISO file in Win Server 2012? The server does not seem to recognize that it is an ISO file and wants me to tell it how to open. How can I resolve this? Please advise and thanks in advance.

In today’s article, we’ll show you a few methods that you try in order to fix this issue for good.

What to do if Windows Server can’t mount ISO files?

1. Make sure to open the file with Windows Explorer

  1. Locate ISO file on your PC.
  2. Right-click the file and choose Open with > Chose another app from the menu.
  3. Select Windows Explorer from the list. Now check Always use this app to open .iso files and click OK.
    always use this app windows server can't open ISO files
  4. After doing that, just double-click the ISO file and it should be mounted without any problems.

2. Make sure that the ISO file is completely downloaded

check ISO file windows server could not mount iso

A corrupted download can sometimes cause this problem with ISO files. To avoid this issue, here are a few simple guidelines to follow in the future:

  1. Check if the file is completely downloaded.
  2. Check if the file size of the ISO file is correct.
  3. Try downloading the ISO file using a download manager.
  4. Check MD5 checksum if possible and check if the file is completely downloaded.

Want to create and open ISO files? You should really use one of these applications

3. Switch to the administrator account

switch to administrator account windows server won't mount ISO files

Many users reported that Windows Server can’t mount ISO files on their PC. If possible, check if this issue exists with the administrator account.

If not, it’s most likely that you don’t have the necessary privileges as a regular user, so you might want to contact your administrator.

4. Use PowerShell

  1. Start PowerShell as administrator.
  2. Enter the following command:
    • Mount-DiskImage -ImagePath 'C:\path_to_iso_file\file.iso' -StorageType ISO -PassThru | Get-Volume
      mount-diskimage powershell windows server could not mount iso
  3. Press Enter.

5. Move the ISO file to another location

move the iso file windows server could not mount iso

  1. If you’re having problems mounting ISO files, try moving the file to a different location.
  2. After doing that, double-click the file and check if it works.
  3. If it doesn’t, try moving the file to the root directory such as C: or D:.

Can’t open ISO files? Here are few great ISO mounting tools to use instead!

6. Use 7-zip

7-zip windows server can't work with ISO files

  1. Download and run 7-zip.
  2. Use the application to open the ISO file.
  3. Once you open the file, extract it to the desired location.

7. Copy the file or change the sparse flag

sparse flag windows server could not mount iso

  1. Open Powershell as administrator.
  2. Run the following command:
    • fsutil sparse queryflag <PathToYouISO>
  3. If the file is set as sparse, run this command:
    • fsutil sparse setflag <PathToYouISO> 0
  4. If you don’t want to use the command line, you can just create a copy of the ISO file and the problem will be fixed.

There you go, several simple solutions that will help you if Windows Server couldn’t mount ISO files. If you found our solutions helpful, feel free to let us know in the comments section.


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If the advices above haven't solved your issue, your PC may experience deeper Windows problems. We recommend downloading this PC Repair tool (rated Great on to easily address them. After installation, simply click the Start Scan button and then press on Repair All.

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