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ErrorImpersonationDenied

Description of error code "ErrorImpersonationDenied"

 

Note: This error code applies to integrations with both Microsoft Exchange Online (Microsoft Graph) and Microsoft Exchange Server (EWS). Where the solution below mentions EWS URLs, service accounts, or the ApplicationImpersonation role, that part applies to Exchange Server. If you see this error on the Microsoft Graph integration and the solution does not resolve it, submit a support ticket.

Domain: Exchange

Code: ErrorImpersonationDenied

Type: Configuration error (You are often able to resolve this type of error.)

Description: Impersonation denied. The connecting Exchange user does not have the “ApplicationImpersonation” role.

Possible solution: You must assign the “ApplicationImpersonation” role to the integration Exchange service account used for the integration.

If the error happens when integrating a service account, please make sure that the service account itself is within the impersonation scope since the validation of the service account is done by impersonating the service account itself.