NAS Guard: External NAS backup fails with "file has vanished" or "permission denied"



When backing up an external NAS share using NAS Guard, the error messages file has vanished or permission denied display.


  • Datto NAS
  • NAS Guard


  • A file has moved during the snapshotting process.
  • The configured user used to communicate to the share lacks sufficient privileges or permissions to view a file.


  1. Ensure no file moving operations take place during a queued snapshot.
  2. Ensure the user associated with accessing the external NAS share has permissions to view all files and folders within the share. This user is defined in the Credentials field during its initial configuration.

Was this article helpful?

0 out of 1 found this helpful

You must sign in before voting on this article.

Want to talk about it? Have a feature request?

Head on over to our Datto Community Forum or the Datto Community Online.

For more Business Management resources, see the Datto RMM Online Help and the Autotask PSA Online Help .

Still have questions? Get live help.

Datto Homepage