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I've been using several Power Automate flows successfully, but recently, when I tried to edit one, I ran into an issue with the OneNote (Business) connection. Specifically, I’m getting this error:
"Failed with error: 'Test connection failed. Details: The request does not contain a valid authentication token. Detailed error information: {0}'. Please sign in again."
Despite the error, in the Connections section, OneNote (Business) is listed as "Connected," but it isn't by used by any Flows.
I’ve tried the usual troubleshooting steps—creating a new connection, re-authenticating, clearing cookies, using private browser mode, and testing in both Edge and Chrome—but nothing has worked. Other connections like SharePoint and Office 365 Outlook are functioning normally, and I can edit flows that use those without any issues. This problem only affects flows involving OneNote (Business). I’ve also tested in both the new and old designer. I confirmed with another user in our tenant they have the same issue, so it's not just my account.
Since I’m running in the Government Computing Cloud (GCC) environment, I suspect this could be a bug related to updates that work in the Commercial Cloud but break in GCC.
Has anyone else experienced this issue or found a solution?
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