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CAIP 400: input item ID does not belong to this connection #2147
✗ Execution failed: CAPIError: 400
{"error":{"code":"bad_request","type":"websocket_error","message":"input item ID does not belong to this connection"}} (Request ID: 00000-00a42e7c-787d-4a9b-bd97-ac57290bda5d)
Model: gpt-5.4 (xhigh)
Affected version
GitHub Copilot CLI 1.0.8.
Steps to reproduce the behavior
Write any prompt. After close and reopen the powershell terminal, I get the same thing.
This has been fixed as of v1.0.10. The root cause was stale WebSocket state being reused after a reconnection, which triggered the "input item ID does not belong to this connection" error. Updating to the latest version should resolve this. If you're still seeing this on a current version, please feel free to reopen.
This has been fixed as of v1.0.10. The root cause was stale WebSocket state being reused after a reconnection, which triggered the "input item ID does not belong to this connection" error. Updating to the latest version should resolve this. If you're still seeing this on a current version, please feel free to reopen.
This has NOT been fixed within VS Code. IDK about GH CLI, but this issue is still occurring within the chat interface of VS Code.
See microsoft/vscode#318482
Reacted by Jorge Fuentes, Giampiero Baggiani, Pablo Freitas Machado, nijuyonkadesu, Panopticron and Steven Ryland
Reacted by Forensics-Bench and Pablo Freitas Machado
It happens to me if a session launches with a different user than I want (e.g. personal vs work) and does a message and then I switch user. It's like it's trying to access data that is keyed under the previous user or something and it just fails. I have to rewind conversation enough that it goes away seems like. Just restarting doesn't fix it.
Describe the bug
Model: gpt-5.4 (xhigh)
Affected version
GitHub Copilot CLI 1.0.8.
Steps to reproduce the behavior
Expected behavior
No response
Additional context
No response