Hi,
After updating our Exchange 2013 SP1 servers to CU6 we get a lot of these errors in the Application log on them. All our DCs except two that is on the same site as the Exchange servers, is in the error messages. It is a bit random in time but each DC gives an error about every 25 minutes on both Exchange servers. Any idea?
Event Id: 2193
Source: MSExchange ADAccess
Process Microsoft.Exchange.Directory.TopologyService.exe (PID=3576). Suitability check failed for server xxxxxx.domain.local with an exception. Error: System.InvalidOperationException: GetDomainControllerInfo() called on an invalid handle.
at Microsoft.Exchange.Win32.SafeDomainControllerInfoHandle.GetDomainControllerInfo()
at Microsoft.Exchange.Data.Directory.TopologyDiscovery.SuitabilityVerifier.CheckNetLogon(SuitabilityCheckContext context) (in CheckNetLogon).