Hybrid - An IIS directory entry couldn't be created. The error message is The remote procedure call failed.

Hi everyone,

I am currently experiencing issues when running the HCW, which throws the following error at the very end:

[02/06/2015 15:09:21]    INFO : Task='Configure MRS Proxy Settings' Step='NeedsConfiguration' START
[02/06/2015 15:09:21]    INFO : Session=OnPrem Cmdlet=Get-WebServicesVirtualDirectorySTART
[02/06/2015 20:19:07]   ERROR : System.Management.Automation.RemoteException:An IIS directory entry couldn't be created. The error message is The remote procedure call failed.
                                . HResult = -2147023170
[02/06/2015 20:19:07]    INFO : Session=OnPrem Cmdlet=Get-WebServicesVirtualDirectory FINISH Time=18586211.3298ms
[02/06/2015 20:19:07]   ERROR : Subtask NeedsConfiguration execution failed: Configure MRS Proxy Settings
                                Execution of the Get-WebServicesVirtualDirectory cmdlet has thrown an exception. This may indicate invalid parameters in your hybrid configuration settings.
                                An IIS directory entry couldn't be created. The error message is The remote procedure call failed.
                                . HResult = -2147023170
                                   at Microsoft.Exchange.Management.Hybrid.RemotePowershellSession.RunCommand(String cmdlet, SessionParameters parameters, Boolean ignoreNotFoundErrors)
[02/06/2015 20:19:07]    INFO : Task='Configure MRS Proxy Settings' Step='NeedsConfiguration' FINISH Result=False Time=18586211.3298ms

We currently have a deployment of Exchange 2007 and 2013 servers across the world (coexistence between the two is working fine). At the moment, I am trying to configure 3 Exchange 2013 servers in London as our Hybrid servers (these servers are multi-role and also host users mailboxes).

Manually running Get-WebServicesVirtualDirectory takes ages to run as it is normal in global deployments.

Initially, Exchange 2007 servers were not members of the Exchange Trusted Subsystem group (http://support.microsoft.com/kb/2995725/en-us). However, after fixing this, the issue remains.

All requirements for hybrid are in place (certificate, virtual directories on the hybrid servers are configured correctly and available externally, DNS, etc). I ran the Hybrid Configuration Diagnostic tool but none of the warnings are relevant for this.

Any help is much appreciated! Thank you so much.

Best regards,
Nuno

http://LetsExchange.blogspot.com