Teams error

Question

Dear Microsoft Support,

We are experiencing recurring sign-in issues on mobile devices (Teams app and Chrome browser).

Error codes encountered:

• AADSTS90023: An error occurred while processing incoming message.
• AADSTS900561: The endpoint only accepts POST requests. Received a GET request.

Troubleshooting details:

Request Id: [ضع القيم من شاشة الخطأ]

Correlation Id: [ضع القيم من شاشة الخطأ]

Timestamp: [ضع القيم من شاشة الخطأ]

The accounts work correctly on PC and tablet, but consistently fail on mobile devices.

We have tried reinstalling the app, clearing cache, testing different networks, and using Chrome browser, but the issue persists.

Could you please assist us in resolving this error or advise on the next steps?

Best regards,

Ahmed

Moved from Microsoft Teams | Microsoft Teams for business | Sign up and Sign in | Sign in

Answer 1

Both error codes indicate that device-based authentication or the way the request is sent from mobile is failing, while desktop scenarios still work.

Use these steps to narrow down and resolve the issue:

1. Check Conditional Access and device requirements
   • If Conditional Access policies require compliant or hybrid-joined devices, verify that mobile devices are supported and properly enrolled.
   • Review the sign-in logs for a failing user in Microsoft Entra ID:
     • Go to the sign-in event that matches the Request Id / Correlation Id / Timestamp from the error.
     • Under Device Info, check Join type to confirm whether a valid device claim is being sent from the mobile device.
   • If the device claim is missing or incorrect, adjust Conditional Access (for example, exclude mobile devices temporarily or relax “require compliant device” conditions) and test again.
2. Avoid unsupported or privacy modes on mobile
   • Ensure users are not signing in from Incognito/InPrivate tabs in Chrome on mobile.
   • Use a supported browser/app: the native Teams mobile app or a supported mobile browser.
   • Confirm that browser cookies and local storage are enabled on the device; disabled cookies can break device authentication.
3. Verify app support for device authentication
   • Some native or embedded browsers do not support the Microsoft Authentication Broker or device authentication flows.
   • Make sure the latest official Teams mobile app from the store is used and that it is not wrapped or modified by third‑party tools.
4. Reinstall and re-register the device (if needed)
   • Since reinstall and cache clear were already tried, focus on device registration:
     • Remove the work account from the mobile OS account settings and any device management profile (if applicable).
     • Re-add the work account and ensure the device is properly registered/enrolled so that a device claim can be sent.
5. If the issue persists
   • Collect the following for at least one failing user:
     • Exact Request Id, Correlation Id, and Timestamp from the error screen.
     • Device type, OS version, Teams app version, and browser version (if using Chrome).
   • Open a support request via the Microsoft 365 admin center or Teams admin center and include the sign-in logs and device details so support can trace the failing mobile requests and confirm whether the AADSTS90023 / AADSTS900561 errors are caused by Conditional Access, device registration, or a service-side issue.

---

References:

• Error AADSTS530004 - AcceptCompliantDevice setting isn't configured for this organization
• Manage devices in Teams
• Create a support request for Teams device issues