Forum Discussion
EWS with oAuth "An internal server error occurred. The operation failed."
Hi... Since yesterday, my synchronization application starts throwing exceptions with the following error "An internal server error occurred. The operation failed." It only happen for mai...
Same error here, but only intermittently. Odd that it cropped up seemingly just this week.
i am getting same error as well. I already include the header for the impersonated mailbox.
It is intermittent but often enough that it is a serious problem.
please post back if you find a solution.
- Switching to Basic Auth with Application Impersonation is a temporary workaround for us.
