On 23/03/2021 15:10, Andy Burns wrote:
Andrew wrote:

I have a Windows notification which says "system
maintenance" with a red circle and an X in it.

Screenshot?

After going into the control panel app for Security and
maintenance, under Maintenance it said

Automatic maintence No action needed
last run 23/3/21 15:03
Windows automatically schedules maintenance on your computer

Must be something that runs on its own. I don't remember
configuring this after the massive upgrade to Win 10 20H2