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I have a power app that when a response is submitted, it triggers a power automate flow to insert data into a sharepoint list and send some emails. 90% of the time it works without issue, but I have been getting an increasing number of failure messages because the token request is being blocked by outlook (office 365) or sharepoint online. Is there something I can do to change or force a token refresh when a user logs into the power app?
Error from token exchange: Runtime call was blocked because connection has error status: Enabled| Error, and sharepointonline is in the block list. Connection errors: [ParameterName: token, Error: Code: Unauthorized, Message: 'Failed to refresh access token for service: sharepointonlinecertificatev2
I just posted this: Mail Tips Action Fails Bad Authorization Token - Power Platform Community (microsoft.com). Your issues seem related to my issue. I think Microsoft must have changed something with regard to Outlook and exchange that is now causing issues. They probably did something to fix Russian Hack of Microsoft Corporate Emails Ensnares US Federal Agencies (msn.com)