If Modern Authentication is forced, are app passwords still working?

Gunter Reinitzer 21

Microsoft announced that with Modern Authentication starting from October 1st 2022 basic authentication will be disabled.
https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic-authentication-exchange-online

But when reading articles about app passwords, it seems to me that they are still supported.
https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-app-passwords
https://support.microsoft.com/en-us/account-billing/using-app-passwords-with-apps-that-don-t-support-two-step-verification-5896ed9b-4263-e681-128a-a6f2979a7944
I also could not find any document saying that app passwords are deprecated with October 1st.

But because app passwords use basic authentication I am not sure whether they will still work or not.

Gunter

Aholic Liang-MSFT 13,826 Reputation points Microsoft Vendor

2022-09-13T08:02:51.523+00:00

Hi @Gunter Reinitzer ,
Just checking in to see how things are going on with this thread.
If the reply was helpful, you can click the "Accept Answer" button under this post so that other's with similar question can benefit from this thread as well.
If you still have further questions or concerns, feel free to post back.

Accepted answer

Vasil Michev 100.2K Reputation points MVP

2022-09-06T14:43:04.253+00:00

Once Basic auth is deprecated, app passwords will no longer work, as detailed here: https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic-authentication-exchange-online

The deprecation of basic authentication will also prevent the use of app passwords with apps that don't support two-step verification.
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2 people found this answer helpful.
JamesTran-MSFT 36,541 Reputation points Microsoft Employee

2022-09-08T20:17:15.107+00:00

@Gunter Reinitzer
I just wanted to check in and see if you had any other questions or if you were able to resolve this issue?

If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.

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Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

KonstantinoS m 0 Reputation points

2023-12-08T15:43:39.6033333+00:00

Basic auth is deprecated, but App Passwords still work.

I just created an App Password and used in in 3d party email client.
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