A common problem we’ve encountered with BackupAssist is a permissions error which can easily be fixed by configuring a Backup User Identity. When creating a backup job that uses a network share or a NAS as the destination, it’s important to remember to create a Backup User Identity. Doing so will ensure BackupAssist connects to the remote system as an existing local user to prevent permission errors.
Before configuring BackupAssist to use a Backup User Identity, you will need to create a user account in Windows for this purpose on the machine running BackupAssist, as well as the remote machine data will be stored on. When creating this user account you’ll want to ensure the username and password are identical on both computers. When completed, you can open BackupAssist and configure the Backup User Identity.
Take a look at the KB link posted below for more help.
