Copilot Agents Not Working – SystemError

Audrey Amstuz 0 Points de réputation
2026-05-19T07:30:23.4+00:00

Hi everyone,

I’m currently experiencing an issue with Microsoft Copilot custom agents and I’d like to know if others are facing the same problem.

Since yesterday (May 18, 2026), all my agents stopped working completely:

  • Even a very simple test agent (basic prompt) returns: “Something went wrong” / SystemError
  • Creating a new agent does not fix the issue
  • The problem is consistent across sessions and browsers

Additionally:

  • The Copilot chat itself works fine
  • But the Agents environment seems broken

This suggests the issue is not related to prompt configuration or data, but rather a backend or service problem.

Important: everything was working correctly earlier the same day.

Has anyone experienced similar issues with Copilot Agents recently?

Is there any known incident or workaround?

Thanks in advance for your help.

Microsoft Copilot | Windows Copilot | Fonctionnalité
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  1. Lucus-V 13,480 Points de réputation Personnel externe de Microsoft Corporation Modérateur
    2026-05-19T18:10:43.5866667+00:00

    Hi Audrey Amstuz,

    Please note that this is Microsoft Q&A forum for French region. However, since you made this thread using English, I will respond in English also.

    At this time, we don't have any official information from Microsoft about this issue, and we don't have the ability or permission to access back-end systems to check what might be happening in the background. Therefore, we regret that we cannot give you a more concrete answer here.

    Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas.

    Given these limitations, the most appropriate avenue for product changes or feature requests is to:

    Thank you for your understanding, and I hope the support team can resolve this for you soon.

    Cette réponse vous a-t-elle été utile?

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