More times than not, you can fix an Outlook issue by either clearing the cache or starting up with a special switch.
Microsoft allows for many switches that can be run from startup to solves a variety of issues. Here's the link to the page that covers many Microsoft apps.
https://support.microsoft.com/en-us/office/command-line-switches-for-microsoft-office-products-079164cd-4ef5-4178-b235-441737deb3a6#Category=Outlook