Teams Assignment Error

Question

Dear Microsoft Teams Supporter,

We are unable to use the Teams Assignments function today, and it shows the message “There was a problem reaching this app.” We have tried using both the Teams desktop app and the browser version, restarted our laptops, and signed out and signed back into our Teams accounts, but the error still appears. I have also attached the error screenshot. This issue is not limited to one laptop/user — it is happening for all users. Thank you for your support.

Best Regards,
Itsuooprt.

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Moved from: Microsoft 365 and Office | Other

Answer 1

Hello @IT Support,

Thank you for posting your question in the Microsoft Q&A forum.        

Regarding the issue where you cannot open Assignments in Microsoft Teams: Microsoft has officially acknowledged this as an ongoing incident. The product team is actively investigating and working on a resolution. 

Here is the detail about the incidents, this information will be update on Microsoft 365 Admin center Service Health soon. 

Title: Some users can't access Assignments, Classroom, and Grades apps within Microsoft Teams 

User impact: Users can't access Assignments, Classroom, and Grades apps within Microsoft Teams. 

Scope of impact: Your organization is affected by this event, and some users located in the Southeast Asia region attempting to access Assignments, Classroom, and Grades apps within Microsoft Teams is impacted. This section may be updated as our investigation progresses. 

Root cause: A recent service update, intended to optimize how Assignments, Classroom, and Grades apps content is retrieved, caused the related apps tab to become inaccessible for some users. 

Next update by: Friday, December 12, 2025, at 10:30 AM UTC 

Therefore, I strongly recommend that you report this issue via the Microsoft 365 Admin Center by navigating to: Health → Service Health → Report an issue. If you’re not an admin, please contact your IT administrator for assistance.

Your action is important as it helps our backend team identify that more users are experiencing this issue. This visibility allows them to prioritize and accelerate the resolution process. We truly appreciate your cooperation in reporting and sharing the necessary details.

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