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Helper I
Helper I

My connections constantly fail with the 'Outlook Send an email V2' connector (failed to acquire token error)

Hello there!


I'm getting this kind of an error somewhat constantly, but at random intervals.

They are always in PowerApps connected flows in Power Automate and they are always in the Send an email (V2) connector.


Error from token exchange: Runtime call was blocked because connection has error status: Enabled| Error, and office365 is in the block list. Connection errors: [ParameterName: token, Error: Code: Unauthorized, Message: 'Failed to refresh access token for service: aadcertificate. Correlation Id=(REMOVED), UTC TimeStamp=7/18/2022 8:14:15 AM, Error: Failed to acquire token from AAD: {"error":"invalid_grant","error_description":"AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2022-01-10T08:13:42.1497343Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2022-07-11T10:32:15.0000000Z'.\r\nTrace ID: (REMOVED)\r\nCorrelation ID: 52b55315-4a03-40e9-9f1b-eaa35a6e5ad2\r\nTimestamp: 2022-07-18 08:14:15Z","error_codes":[50173],"timestamp":"2022-07-18 08:14:15Z","trace_id":"(REMOVED)","correlation_id":"(REMOVED)","error_uri":""}']


Does anyone have an idea what could be going on? 

These are untouched, otherwise working flows that I have to reconnect and check because a user reports that she's not getting the result she's usually getting.

I did not change anything on the connected account either.


Thank you very much in advance.


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