Unable to add Exchange email address in Apple Mail on Mac

Arshia 25

I am trying to add my Exchange email to Apple Mail on Mac, but I keep getting the same message that says, when going into the sign-in page, "Authentication Failed. Failed to authenticate, please try again later."

I tried to sign in manually to see if that would work, but to no avail; it says, "Unable to verify account name or password."

Is there a working solution that specifically solves this issue?
Screenshot 2025-10-04 at 9.49.30 AM

Screenshot 2025-10-04 at 9.50.00 AM

DJA 35 Reputation points

2025-10-04T21:20:16.76+00:00

Having the exact same issue here, seems to be failing to connect to the MS servers for the initial handshake. Following this post.
Tao-hsiang Chang 10 Reputation points

2025-10-05T13:22:52.98+00:00
I'm also facing the same problem. I got my new laptop and doing the settings, including mail accounts adding to Mail app.

Information to my Microsoft 365 account:

Is a personal account

Is a passwordless account

Two step verification on

Sign in option includes email a code, text a code, send sign-in notification and use a passkey, all properly settled

And there's only Microsoft Exchange option (no outlook.com) when trying to add account to Mac. The sign in option showed exactly the same prompt as Arshia shows: Authentication Failed with "Failed to authenticate, please try again later" and this has been the same for at least two days.

If I use manual sign in, I have no password since I'm a passwordless account. I tried generate an app password but it cannot verify as in Arshia's second picture.

8 answers

Grizzly55 85 Reputation points

2025-10-12T01:07:17.0866667+00:00

I created a fresh install of macOS Sequoia 15.7.1 and had no problem in Mail using "Microsoft Exchange" to add my Outlook account. Used the "SignIn" route, got the window to verify my Outlook account and all went fine. Based on others now not having any problems it looks like Apple and/or Microsoft fixed something. Nice to have Email back and working like before.
Was this answer helpful?

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Dave Garratt 25 Reputation points

2025-10-06T10:59:55.6533333+00:00

Having the same problem, have spoken to Apple who suggested reinstalling macos (not helpful) - now it seems to be an incompatibility between Apple Mail and Microsoft - how do we move forward ?
Was this answer helpful?

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Deleted

This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Comments have been turned off. Learn more

Unable to add Exchange email address in Apple Mail on Mac

8 answers

Your answer