Error SystemError

Question

Error SystemError

Hoces Cusacovich, Agustina 0

Hello Microsoft Support,

I am experiencing an issue with an agent that was previously working correctly. The agent suddenly stopped working for my account, while all of my colleagues can still access and use it without any problems.

The issue appears to be specific to my user account, as I am currently the only person affected.

Error details:

Error** message: "We're sorry, an unexpected error has occurred. We are investigating it." Error Code: SystemError Conversation ID: a:1Ytk6vkBdT8IVWm6Zisb6YXX2z-mnFX0m7-isUiDWviR7MxTxcpNkYH8WiZAWRprXkmpxZBSNcRwu6SITdRfuJ8H1pM7vb9mGL8ZemEdZW1xhsqiW442a_T8V3u4VZjT4 UTC **Time: August 5, 2026, 8:45:37 PM

For troubleshooting, I have already tried clearing the chat history, but the issue persists.

Could you please investigate whether there is a problem with my account, permissions, or agent configuration?

Thank you for your assistance.

Agustina

Sayali-MSFT 6,396 Reputation points Microsoft External Staff Moderator

2026-08-20T10:28:53.6466667+00:00
Hello Hoces Cusacovich, Agustina •
Since the agent continues to work for other users, the issue is likely specific to your account rather than the agent configuration itself. The generic SystemError message does not provide enough information to determine the root cause.

To investigate further, please collect the following details:

Tenant ID and user UPN affected by the issue

Whether the issue occurs across both Teams and Copilot Studio web experiences

A recent Correlation ID/Conversation ID and exact timestamp from a failed session

Confirmation of whether signing out/in, using InPrivate mode, or a different browser produces the same result

Any recent changes to licensing, permissions, security policies, or account settings

As an initial check, verify that the affected user has the same licenses, security group memberships, and access permissions as colleagues who can successfully use the agent. If the issue persists, backend diagnostics using the provided Conversation ID and timestamp will be required to determine whether there is an account-specific service or data issue.

Your answer

Sayali-MSFT 6,396 Reputation points Microsoft External Staff Moderator

2026-08-20T10:28:53.6466667+00:00

Hello Hoces Cusacovich, Agustina •
Since the agent continues to work for other users, the issue is likely specific to your account rather than the agent configuration itself. The generic SystemError message does not provide enough information to determine the root cause.

To investigate further, please collect the following details:

Tenant ID and user UPN affected by the issue

Whether the issue occurs across both Teams and Copilot Studio web experiences

A recent Correlation ID/Conversation ID and exact timestamp from a failed session

Confirmation of whether signing out/in, using InPrivate mode, or a different browser produces the same result

Any recent changes to licensing, permissions, security policies, or account settings

As an initial check, verify that the affected user has the same licenses, security group memberships, and access permissions as colleagues who can successfully use the agent. If the issue persists, backend diagnostics using the provided Conversation ID and timestamp will be required to determine whether there is an account-specific service or data issue.