Skip to main content
Community site session details

Community site session details

Session Id :
Power Automate - Using Flows
Unanswered

Flow connection failed to outlook

(1) ShareShare
ReportReport
Posted on by 8
Hello,
 
My flow has been running fine for the past couple of years. Today it asked to reconnect to the outlook connector but I still get this error message. Any help much appreciated.
 
Error from token exchange: Runtime call was blocked because connection has error status: Enabled| Error, and microsoftforms is in the block list. Connection errors: [ParameterName: token, Error: Code: Unauthorized, Message: 'Failed to refresh access token for service: aadcertificate. Correlation Id=3f8da6fa-2057-4d1b-b7a8-98062a67e1c2, UTC TimeStamp=9/12/2024 7:22:58 AM, Error: Failed to acquire token from AAD: {"error":"invalid_grant","error_description":"AADSTS135010: UserPrincipal doesn't have the key ID configured. Trace ID: 30a1c634-86d0-4e78-b3dc-a7ae732c5900 Correlation ID: f44e6928-1509-4405-a480-fa1e1959a1f2 Timestamp: 2024-09-12 07:22:58Z","error_codes":[135010],"timestamp":"2024-09-12 07:22:58Z","trace_id":"30a1c634-86d0-4e78-b3dc-a7ae732c5900","correlation_id":"f44e6928-1509-4405-a480-fa1e1959a1f2"}'
 
Thanks,
 
Jason
  • Suggested answer
    Michael E. Gernaey Profile Picture
    44,838 Super User 2025 Season 1 on at
    Flow connection failed to outlook
    Hi
     
    in your flow are you using a Connection or a Connection Reference?
     
    I would verify the Connection itself, and if you are using a Connection, swap to a connection reference.
     
    Also are you trying to Send On Behalf of someone? As it could be that changed, since the error shows there is no Key ID for the user principal so something changed in regards to that service account and or user account. So you also need to check that.

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Paul Stork – Community Spotlight

We are honored to recognize Paul Stork as our July 2025 Community…

Congratulations to the June Top 10 Community Leaders!

These are the community rock stars!

Announcing the Engage with the Community forum!

This forum is your space to connect, share, and grow!

Leaderboard > Power Automate

#1
Michael E. Gernaey Profile Picture

Michael E. Gernaey 497 Super User 2025 Season 1

#2
David_MA Profile Picture

David_MA 436 Super User 2025 Season 1

#3
Riyaz_riz11 Profile Picture

Riyaz_riz11 244 Super User 2025 Season 1

Featured topics

Restore a deleted flow