1-800-691-1991 | 9am - 8pm ET

No disks have been mounted…Windows FLR


When attempting to perform a Windows FLR (Guest Files ‘Windows’) the restore fails with:

User-added image

No disks have been mounted. Either disks of this type aren’t supported or some errors occurred. See log file for details.


Confirm that the VM that the files are being restored from was using one the following filesystems.        
  • FAT
  • FAT32
  • NTFS
  • ReFS*
Troubleshooting Steps
1.  Clear all temporary files from “C:\Users\<serviceaccount>\AppData\Local\Temp\”

Note: When the Veeam Backup Service account is ‘local system’, the temporary directory used is C:\Windows\Temp.

2.  Open an Administrator Command Prompt and run the following commands:
(The installation path for Veeam if it was upgraded from 6.5 is: C:\Program Files\Veeam\Backup and Replication\)
(With Veeam v9 the operation must be performed on a Mount Server under the path: C:\Program Files\Common Files\Veeam\Backup and Replication\Mount Service)
cd “C:\Program Files\Veeam\Backup and Replication\Backup”
vdk remove
vdk install

3.  Confirm that the account being used for the Veeam Backup Service has the "Perform volume maintenance tasks" right assigned to it. This can be located within the group policy (gpedit.msc) under:
Computer Configuration>Windows Settings>Security Settings>Local Policies>User Rights Assignment
4.  Reboot the Veeam server


More information

To restore files from a VM running Microsoft Windows ReFS 3.x, the console and mount server must be installed on machines running Microsoft Windows Server 2016.

To support restore of files from a VM running Microsoft Windows ReFS 2.0 or earlier the console and mount server must be installed on machines running Server 2012/Server 2012 R2.

If the server you are attempting to restore from has volumes with native 2012 data deduplication, the Veeam console and mount server must be installed on the same operating system and also have the “Data Deduplication” role enabled. The “Data Deduplication” role appears under "File and ISCSi Services" in server manager.

If the Windows FLR continues to fail after attempting the steps outlined in this KB, please attempt and Other-OS FLR. For more information regarding how to do that please review the following:

Veeam Backup & Replication
6.x, 7.x, 8.x, 9.x
Last Modified:
Please rate how helpful this article was to you:
5 out of 5 based on 1 ratings
Thank you for helping us improve!
An error occurred during voting. Please try again later.

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

Knowledge base content request
By submitting, you agree that your personal data will be managed by Veeam in accordance with the Privacy Policy.

ty icon

Thank you!

We have received your request and our team will reach out to you shortly.


error icon

Oops! Something went wrong.

Please go back try again later.