Error 880: BACKUP DATABASE permission denied in database: (xxxx)
SQL error 15404: Could not obtain information about Windows NT group/user 'domain\user', error code 0x5.
SQL Backup exit code: 880
SQL error code: 15404
The domain\user in this case has sysadmin role and can perform any Admin tasks in SQL Studio on the laptop without any issues.
What other permissions are required for Redgate SQL Backup to work?