Applies ToExchange Server 2016 Enterprise Edition Exchange Server 2016 Standard Edition

Symptoms

When you migrate Microsoft Exchange Server 2010 mailboxes to Exchange Online in a hybrid environment that has Microsoft Exchange Server 2016 installed, the migration fails randomly and returns the following error message: 

Transient error CommunicationErrorTransientException has occurred. The system will retry

Additionally, you may receive the following TransientException error message:

Timestamp: DateTimeFailureType: CommunicationErrorTransientExceptionFailureHash: ea66FailureCode: -2146233088MapiLowLevelError: 0FailureSide: SourceFailureSideInt: 1ExceptionTypes: {Exchange, Transient}ExceptionTypesInt: {1, 2}Message: The call to 'https://mail.DomainName.com/EWS/mrsproxy.svc ServerName.DomainName.com (x.x.x.x caps:AFFFBF7FFFFFCB07FFFF)' failed. Error details: Exception from HRESULT: <0x80D5DC38>. --> Exception from HRESULT: <0x80D5DC38>.

Note In the "Error details" section of this message, the "0x80D5DC38" HRESULT hex code represents the actual hex code that is generated.

Resolution

To fix this issue, install cumulative update 5 for Exchange Server 2016.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.