Exchange Account Setup in Gmail Broken

I don't know if I fixed my problem or someone at Microsoft support fixed something, but this is what I did and it started working again...

On my android (version 9) phone, went to the Play Store, found the Gmail app and selected "Uninstall all updates" to it, reverting it back to the original factory installation.  You might also be able to do this under Settings > Apps & notifications > Gmail.

Then, Settings > Accounts, select the old hotmail account and then remove it.

Then, Settings > Accounts > Add account > Exchange, typed hotmail account email address, then "Manual Setup".

When asked what type of account is this, select Exchange.  Enter password > Next, and on "Incoming server settings" changed the server name from imap-mail.outlook.com to eas.outlook.com (from previous notes I made).  A new screen then asked for all kinds of remote-control permissions (even a phone factory reset), but once I clicked OK the account was  set up and everything synced properly again --email, contacts and calendar.  The account shows up (under android Settings > Accounts) as "******@hotmail.com" as type "Exchange".

I don't think I'll let the Gmail app update itself again for quite awhile!

Installing an older version of GMail fixed the problem for me.

Just get the GMail apk from September 27 here:

https://www.apkmirror.com/apk/google-inc/gmail/

Then make sure that automatic updates are disabled for GMail in the Play Store App.

Installing an older version of GMail fixed the problem for me.

Just get the GMail apk from September 27 here:

https://www.apkmirror.com/apk/google-inc/gmail/

Then make sure that automatic updates are disabled for GMail in the Play Store App.

Sure, it goes! So, latest functional build is

Gmail 2019.09.15.270135155.release

Thanks for helping me!

I've just heard from the next level of Microsoft support & they seem to have fixed it. 

If you can remember a contact you added via the Contacts app to your Microsoft/Outlook account, search for it in the Outlook app. Press Add Contact, then it will ask to sync your account with Android. I had to do this a couple of times before it worked and my Microsoft/Outlook account appeared back in my Contacts app. I then fixed the Calendar issue by removing then reinstalling the widget.

Hope this helps

I don't have 2-factor security enabled on my account, it's an old free hotmail address that I usually read via web browser at outlook.live.com.  I used my actual hotmail password for the Android mail app, same as before.

On my Android 9 phone (a Moto G6) I've been using the pre-installed Gmail app to read email, contacts & calendar.  It worked fine until this morning, when I got the same warning to update my Exchange account, followed by the error message screenshot posted above.  Maybe an overnight app update broke something.

Removing my account (and re-adding it back) just removed all my contact phone #'s and blanked my phone calendar.  Trying to add my hotmail account back as a Pop3 or Imap semi-works but only for email --the contacts & calendar won't sync. 

If adding my hotmail account as an Exchange account, it complains "go back & choose Outlook, Hotmail & Live", but doing that is the same as the Pop3/Imap setup (no contacts or calendar).  If I ignore & setup as Exchange, it says it OK'd the account setup, but nothing works, sync fails for email, contacts & calendar.