A Backup contains a VM with Windows 2016 as the GuestOS and Deduplication is enabled for some (or all) of the drives. The Backup completes without Warnings or Errors, but when performing a Windows File Level Restore, you receive the following message:
“Failed to transfer C:\VeeamFLR\VMName_index\Volume#\filename. The revision level is unknown”. Clicking ‘Continue’ skips the file.
If you navigate to C:\VeeamFLR and the locate the same volume, the file will be seen, but it won’t be restorable, producing the error: Error 0x80070519: The revision level is unknown.