Error: One or more files were copied unsuccessfully due to lack of permissions

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Issue

When attempting to back up a production NAS share using the NAS Guard feature, you receive the error message "One or more files were copied unsuccessfully due to lack of permissions."

Environment

  • NAS Guard

Cause

The credentials used by the Datto appliance to access the external share cannot access one or more files within the share.

Resolution

1. Perform a file restore, and explore the share to determine whether all important files have been backed up.
2. From the production machine, verify that the user account designated for the share backup has the correct permissions to access the desired files.
3. If the share user is correct, but the permissions for the user on the production machine are incorrect, update the user account with the correct permissions. Then, attempt another backup, and observe the results.
4. If the share backup was configured with the wrong user, remove the share from the Datto appliance and re-add it with the correct user account.

If you do not know which user account is associated with the NAS share backup, contact Datto Technical Support for assistance.

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