Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
1
Open the Settings App.
Go to Accounts.
Select Access Work or School, is there is a work or school Email listed there?
If so, select that account and click Disconnect, then restart (not shut down) your PC.
2
With regards to Microsoft 365, if you have a personal subscription to Microsoft 365, log into your Microsoft account on this link and check the expiry date indicated for your subscription, if that is correct, you can download and install Microsoft 365 from your account on that link.