Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi, I'm Bernard, a fellow Windows user. I'm happy to help!
You mentioned that it is a business account. Do you have a company IT? If yes, I recommend contacting them to check for permissions. If you do not have IT/Admin, I suggest following the steps provided by Q&A Assist. If all fails, kindly follow the steps below:
I recommend submitting a recovery form:
Please complete the form and expect a reply within a couple of days.