Challenge
When you try to perform File Level Restore via the Veeam Backup Enterprise Manager UI, the following error occurs:
Error occurred during the FLR job execution
Failed to mount disk. Check free disk space on backup server
Failed to mount disk. Check free disk space on backup server
The following entries can be seen in the Svc.VeeamBES.log:
[timestamp] <57> Info Mapping mounted drives.
[timestamp] <57> Info Trying path [C:\Users\user\AppData\Local\Temp\xxxx]
[timestamp] <57> Error Failed to map mounted drives.
[timestamp] <57> Error Failed to mount disk. Check free disk space on backup server. (System.Exception)
[timestamp] <57> Error bei Veeam.Backup.EnterpriseServices.CFLRRestoreTask.MapMountedDrives(String[] mountedDrives)
However, if you launch File Level Restore from the Veeam Backup console, it is completed successfully.
Cause
There may be two causes for this error:
1. Insufficient disk space on your Veeam server;
2.You do not have sufficient permissions to access the files.
Solution
Make sure the user account under which the Veeam Backup Enterprise Manager runs has sufficient rights to access the files you are trying to restore.