Microsoft keeps asking for my IMAP password.

You’ll need to look for that from whoever is managing the particular mail server you are using.

Microsoft offers various mail services, including Hotmail, Outlook, and stuff running at Azure, among others.

Usual fix for these cases is to remove and re-add the Mail account on the iPhone.

But yes, you will need to know your mail server credentials.

You might find copies of your credentials available in Settings > Passwords, on iOS 17.

tami34285 wrote:

How do I find my IMAP password?

Same password to log onto your email account.