Fixed Outlook Retry Attempts Error but Need One More Solution

Hi, I got the Outlook error “Number of retry attempts exceeds expectation” (CAA50021) after my company changed MFA settings. I tried clearing credentials, reconnecting my account, and repairing Office. While searching Google, I found a DataHelp article and used their PST Repair Tool because my PST got corrupted from repeated crashes. It fixed my emails, but now some old folders sync slowly. Should I create a new Outlook profile?