Hello,
we have Exchange hybrid configuration, on-prem mailboxes. We have an issue with MS Teams calendar.
Accepting meeting via quick RSVP button, i fails:
Unable to respond to 'meeting'. Close and try again.
Using Teams DevTools i get this error message:
2021-05-06T10:41:22.991Z CalendarService: Calendar - Update meeting response failed: RequireStatus::RequireStatus::RemoteOperationFailed; StatusCode: 500 requestId: F004F7D67EEA4D43AD31B198F6E9B9A8
When i open the meeting (aka show me full details of the meeting), there is another button where i can accept/decline invitations, and from there accepting meeting works (with status code: 200)
We configured our loadbalancer to turn off preauthentization for following URLs, based on hybrid-deployment-prerequisites
"/ews/mrsproxy.svc"
"/ews/exchange.asmx"
"/ews/exchange.asmx/wssecurity"
"/autodiscover/autodiscover.xml"
"/autodiscover/autodiscover.json"
"/autodiscover/autodiscover.svc/wssecurity"
"/autodiscover/autodiscover.svc"
Is there another URL we need to allow, that isnt mentioned in the official documentation?


