PC Shutdown after successful Backup not happening

[DoItDaily]

Greetings. For many weeks, my scheduled backups have been going beautifully, but recently the shut down after finished feature which is selected in the backup scheme is not happening. This is happening on my wife's machine as well. Then sometimes later the next morning, the PC will go into shut down while I am working. I checked the logs and everything was successful. What can I do? Thanks for your help.