63024: [Fixed] Acronis True Image: unable to select a disk for new backup, already configured backups fail, if volsnap is missing from UpperFilters in the system registry

Last update: 31-05-2021

Symptom 1

Entire PC or Disks and partitions backup fails with error "The operation was terminated because no Volsnap driver was found."

Symptom 2

Entire PC backup interrupts with message "Source is not selected. The operation has been terminated".

Symptom 3

After interruptions and retries, illustrated above, Entire PC backup transitions to the "failed state" and a red cross is displayed. The error text says "Source is not selected. The operation has been terminated".

Symptom 4

If you try creating a new "Disk and partitions" backup, "OK" button is grayed out and a message appears: "Unable to back up a locked volume encrypted with BitLocker. Unlock the volume or turn off BitLocker, and then try again.", even though the selected disk volume is in "unlocked" state (see Compatibility with Bitlocker).


Known issue in the product.


The issue has been fixed. Please update the software to resolve the issue.


  1. Switch to the "Account" tab of Acronis True Image and install the latest update.


  2. Download and run the latest installation file as per https://kb.acronis.com/latest