From last two days I have problem with "Post a message (V3)" action.
When I want to choose channel from particular Team then I got error "Could not retrieve values. Failed to execute Skype backend request GetThreadsS2SRequest."
Additionaly I got similar error when I send request to list channels via MS Graph - Link
Having a similar issue, attempting to integrate Zoho Flow. Simply trying to get a post created. When creating the connection, it requires an 'Admin' to login and accept the Flow to connect to Teams. Then when trying to select a 'Team' prior to selecting a 'Channel' in Flow; get the 'Failed to execute Skype backend request GetThreadS2SRequest.
I'm having the exact same issue. The interesting part is that, it was working perfectly. Suddenly, a Team disappeared itself and I had to recreated it from the Office 365 group. When I checked my flow on power automate it started failing with this error but not only with the disappeared team but with all of them.
All suggestions that I found are specific to the graph API but on Power Automate I don't have access to its internal request to the API. Any Powershell command I should run to fix this.
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