Outlook 365 is defaulting to IMAP instead of Exchange

Outlook 365 is defaulting to IMAP instead of Exchange

FIXED: I was trying to setup a new Microsoft 365 Exchange account in Outlook desktop and it only gave me IMAP as an option. It should not as it’s a new account and I hadn’t changed the mail settings in the admin control center. After doing some research and help from my 365 vendor, turns out the account was not accepted as a domain, the tenant account was authorized but the domain was not.

As I did not do the actual work, I still wanted to share the answer and here is a link that gives better instructions. If you have a CSP partner, they can most likely help. If you call Microsoft, be sure to tell them you found my blog so they can skip other troubleshooting and get to the real issue. If you need my help with this or other 365/Outlook issues, please fill out the form below or schedule an appt.

Manage accepted domains in Exchange Online | Microsoft Learn