Troubleshooting Restoring Tableau Server

The Restore process does not have permission to the restore folder

When using the default location, the configuration of folder permission is handled by the Tableau server installation process. 
The default location for the restore files:

Reapplying folder permissions

In some organizations, Group Policy or other system management solutions are used to standardize permissions and accounts on application servers. If your organization runs a such a solution, be sure to configure the system to accommodate the folder permissions required by the Run As User account. If the folder permissions for the Run As User account have been changed, you can use Tableau Configuration Utility to reapply the permissions. See Reapplying Permissions.

• Pre-TSM (Tableau Server 2018.1 or earlier on Windows) - Reapplying Permissions
• TSM (2018.2 or later on Windows, 10.5 or later on Linux) - Change the Run As Service Account

Using a non-default location

If the restore file location has been changed, then you will need to ensure the following permissions:

Window

Linux

Anti-virus

The use of anti-virus / end point security programs typically will require an exception created for Tableau Server as they may prevent the writing of the backup file.  Not having an exception may also impact server performance.
See Improving Performance by Using Antivirus Exclusions.