Exchange Account Setup in Gmail Broken

Didn't fix it for me.  Tried deleting account...updating gmail...re-adding hotmail account (with exchange settings)...and I get the same security error.

I think Microsoft has to change something on their end so exchange plays nice with the new gmail security settings.  Perhaps it's an account by account thing - but I'm not sure how we track that down!

Not sure what's your setup, but this is what I did & hope it helps.

1. I have two-way auth enabled on Hotmail
2. when setting up the exchange account, I choose do it manually.
3. use m.hotmial.com as the domain
4. generate an app-only passcode from the security section and use that as the password.

That's what I did.

Oh, you also need to make sure you have this version Gmail 2019.11.03.280318276.release

I don't believe it's officially in the google store yet.

Updating to that version of gmail worked.  Thanks!

Didn't fix it for me.  Tried deleting account...updating gmail...re-adding hotmail account (with exchange settings)...and I get the same security error.

I think Microsoft has to change something on their end so exchange plays nice with the new gmail security settings.  Perhaps it's an account by account thing - but I'm not sure how we track that down!

Not sure what's your setup, but this is what I did & hope it helps.

1. I have two-way auth enabled on Hotmail
2. when setting up the exchange account, I choose do it manually.
3. use m.hotmial.com as the domain
4. generate an app-only passcode from the security section and use that as the password.

That's what I did.

Oh, you also need to make sure you have this version Gmail 2019.11.03.280318276.release

I don't believe it's officially in the google store yet.

Yep, this new version has reached Google Play Store today and fixed the problem for me. 😊😊

Microsoft was not at fault here.

In reply to all: I also struggled for days and tried all the above. One issue was either to use as domain: eas.outlook.com, outlook.live.com or outlook.office365.com when adding the exchange account. On eas and office365 I was able to get the account added, but nothing showed in the calendar. On the outlook.live.com I got: cannot connect to server.

After endlessly adding the account with my email address and alias email addresses, I finally stumbled by coincidence over a setting in my Microsoft account that showed which mobile devices were allowed to sync with Outlook. There were about 5 Outlook devices listed (click on the pen icon and it will provide more info), which were all related to the Android phone (Moto 6), some entries were old and from a previous phone. I deleted them all, deleted the Outlook exchange account on the phone and then added the Outlook account again through Exchange.

As my email address is a Hotmail address, it said I needed to add it as Hotmail, but that does not give you the contacts and calendar. So I added it manually and used the eas.outlook.com domain (as said, on the outlook.live.com domain it did not work). I do not know why it has to be the eas.outlook.com domain, but it it immediately synced my outlook calendar with the Google calendar, which is what I wanted.

The setting for the syncing of the mobile devices you will find in Outlook, go to Setting, go to All Outlook settings, go to General.

Now my phone is added with a new Outlook and  an Android entry in the above screenshot. Do not ask me why twice, but my calendar now finally works. 

By the way, if you want your calendar entries to show up on your lock screen (that was a nice Windows phone feature), use the Calendar notify app.

It stopped working for me today, I tried all the mentioned above domains but it can't connect to the server. 

My Gmail app version is 2020.01.27.293735221