

The broken O365 Business Essentials account.

So I'm now in the situation where neither profile works for that email address (O365 Business Essentials), so I have one profile just with that mailbox (not working) and the original profile showing mailboxes from: Clearly I don't understand the influence of the registry entry on any given profile, or indeed cause and effect between all this. The new profile worked and I thought 'great, I wonder if I can reinstall the account on the existing profile?" (to avoid reinstalling everything below.) which I did, and it worked there too. I'm afraid I can't remember the exact sequencing, but I think I added the registry entry, then when it didn't work, created a new profile as a last resort (may be wrong).
