Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
From the error details, the key message is:
AADSTS9002331: Application is configured for use by Microsoft Account users only. Please use the /consumers endpoint to serve this request.
Could you please let me know which service or application you are trying to access when this error occurs?
Based on the error message, it appears that the application is configured to allow sign-in using personal Microsoft accounts (MSA) only (for example, Outlook.com, Hotmail.com, or Live.com accounts). If you are attempting to sign in with a work or school account (Microsoft 365 / Microsoft Entra ID account), the sign-in request may be rejected because the application's supported account type is restricted to personal Microsoft accounts.
If you are not the tenant or application administrator, please contact your IT administrator and verify with them. You might also want to try the following quick test:
- Open an InPrivate/Incognito browser window.
- Sign in again and see if the issue persists.
This can help determine whether multiple Microsoft accounts are signed in within the current browser session. In some cases, cached credentials or account cookies can cause the sign-in process to use the wrong account type, resulting in this error.
If you are the administrator, please review the application's App Registration configuration in Microsoft Entra ID and verify the Supported account types setting. You'll have to change your App Registrations supported account type.