Hi sac
As my testing , if i click the cron job testing url and get error "not qualified " is normal .
That because you have enabled the cron job in dolibarr , but the windows schedule task tool has not executed the cron_run_jobs.php yet .
If you look at the task tool history , and that command works every 5 mins , then you could go back to see the backup page to see if dolibarr get new backup or not . (Note. Please set local database backup job execute per 10 mins to test .) And because it need to wait for windows task tool to execute cron_run_job.php , so it maybe would delay for 3 or 4 mins to get new backup file .
