Full file backup not starting

I have set the full file backup for one day (I.e. Sat/0-24) and set the interval of 7 days in between that. But it is not starting as per time automatically. I have to start it by manually.
why it’s happening any idea?

hi y.pradip
I hope it’s not too late. do you mean you set a Scheduled file backup, but it do not work. I have similar questions 3 month ago. later, I give up the built-in tool in Windows 10 and download a backup and restore software. it works well. if you use Windows operating system, you can try it