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Since yesterday, with the update to the new version of Copilot Studio, child agents have stopped working. Basically, every time they are invoked, they throw an error and do not execute the actions they are supposed to perform. Unfortunately, the error is generic, like this: Sorry, something went wrong. Error code: SystemError. Conversation ID: 15691d69-f3ee-4ccd-9e22-99181371ea9c. Time (UTC): 11/12/2025 12:51:24 PM.
Until yesterday morning, they were working correctly. Is anyone else testing child agents and experiencing this issue?
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