privacy settings

Hi, I created an account on a company's website that required access to my Microsoft account for login. I no longer wish to be a member and would like to revoke their access. However, I’ve been unable to find where to do this. Any assistance would be greatly appreciated. Thank you!

So today I got these new privacy settings boxes in Outlook and Word 2021 every few minutes. I tried choosing No >> OK then Yes >> OK but it never stopped. Meanwhile, there were four new updates to Windows in general, three yesterday and one today, dated those dates, OK? We will come back to...