Forum Discussion
MichaelDenmark
Aug 25, 2022Copper Contributor
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...
Thinkjohn
Aug 26, 2022Copper Contributor
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.
chad512
Aug 27, 2022Copper Contributor
Switching to Basic Auth with Application Impersonation is a temporary workaround for us.