Using Classic Outlook on Windows for personal email, calendar, and contact management
@Ben Hoglund said
My Outlook programs stopped working and I received a message indicating that I need to update my software. I entered the e-mail address associated with my account, was sent an access code which I entered. The next screen said that there was an atypical error and I couldn't proceed any further. I've tried multiple times and received the same message.
Microsoft does not normally send an email telling you that you need to update your software. But this is a technique used by hackers.
Do you still have the original email? If so, what web site did you go to where you entered your e-mail address? I don't need the whole email, just the link to the web site you were directed to.
On that website, did you enter only the code that was sent to you, or also your account password or any other information?
Also, please review this article to ensure that your account is still safe.
https://support.microsoft.com/en-us/accounts-billing/security/what-is-the-recent-activity-page