Can not add Hotmail accounts

Hello there, mail-app Xpertz!

I’ m reaching out for your help, because I’m facing issues with integrating my two Hotmail accounts in nc mail-app.

I’ve been following these instructions, registered for Azure, registered a new “app” (aka nc-mail-app) for my domain with Client ID and Passcode placed in the Nextcloud Groupware mailing section.

The setup fails in the last step where you grant permissions for the app, with the message “The setup of your account has failed.”

( I guess, when I’ve come to the point of granting permissions, the password ist correct. Regardless if auto or manual.)

The logs show:
**ServiceExceptionCould not decrypt account access token: Missing access token for xoauth2 account

Could not load account mailboxes: Could not decrypt account access token: Missing access token for xoauth2 account**

Every try leaves an abandonded account in the menu of the app.

I have activated 2FA for my cloud access but checked off server-side encryption.
The config.php is set to switch every new default user account to german,

What am I missing? What am I doing wrong?
How can help?

Kind regards,
Holger

No one? Not even from the support team?

Did you install and configure the OAuth2-App?
https://docs.nextcloud.com/server/stable/admin_manual/configuration_server/oauth2.html

No, not directly. I’ve only set up the Groupware section.
Although, I cannot find the OAuth2. The “App store” in NC is not searchable.

At the OAuth 2.0 is nothing:

Here’s what I configurated in Groupware:

What should I do now?

Follow the instruction as witten and click on the link “hier klicken” above the input field with “common”.

Starting here I cannot help you more, because I never used this feature.

That is exactly, what I already did. After I’ve completed that, I got the error.
Maybe I’m missing something at the OAuth 2.0-Clients section? I don’t know what to fill in there.

Did you find this thread?

Yes, but this does not provide the solution.
Why isn’t there a step-by-step tutorial on how to connect Hotmail accounts in the app?
I can’t be the first one facing these “problems”.