EWS Error The request failed. The underlying connection was closed

Issue

When testing the connection to an EWS mailbox in KIC versions 2.8 and below, the following log occurs in the logs:

"{"EwsDotNet"} Cannot retrieve messages from EWS. EWS returned exception. Microsoft.Exchange.WebServices.Data.ServiceRequestException: The request failed. The underlying connection was closed"

How can this be resolved?

Solution

It has been seen in several different scenarios that upgrading to KIC 2.9 with Fix Pack 5 resolves this error.

Level of Complexity 

Easy

Applies to  

References

Callstack:
    at (Capture/Kofax_Import_Connector/Troubleshooting/EWS_Error_The_request_failed._The_underlying_connection_was_closed), /content/body/div[5]/div[2]/pre, line 2, column 1