There is an ongoing issue in Exchange Connectors. An incident has been raised related to this error - Web Hooks erroring randomly, unauthorized, the public key XXXXXXXXXXXXXXXXX = is not found for ring WW, cannot validate signature"}.
Teams webhook suddenly stopped working
We have a CI/CD pipeline that sends messages to a Teams channel via the "Incoming Webhook" connector. Yesterday at 3:47PM Central was the last time that the webhook worked; today I'm getting a 200 response, but the body of the response shows that something is wrong... the gist of it is "XXX is unauthorized, the public key XXX is not found for ring WW, cannot validate signature."
I tried creating a new connector but am getting the same response. And, when I delete the new connector and submit the form to tell why, I get an HTTP error there too.
Is there an outage? Did something change that I need to address?
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Meghana-MSFT 3,891 Reputation points Microsoft Vendor
2023-10-17T15:16:07.31+00:00
2 additional answers
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Matt Rydzik 0 Reputation points
2023-10-16T22:50:00.87+00:00 Same thing here, retries sometimes work.
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Thuan Le 0 Reputation points
2023-10-18T08:40:09.3533333+00:00 It works normally today. Maybe the problem is fixed. Hope it won't come back to haunt us.