While working on a new Skype for Business Server 2015 Enterprise Edition Pool, a colleague of mine noticed an error on just one out of the 12 servers…
They were all deployed at the same time, all had Windows Update ran with the same number of patches, and all had the same Skype for Business Server CU installed.
The Problem Server
Only 1 of the Front End Servers had logged the following event numerous times to the Application Event Log.
Event ID 3 - System.ServiceModel 18.104.22.168
WebHost failed to process a request.
System.ServiceModel.EndpointNotFoundException: The service '/Reach/DataCollaborationRelayWebService.svc' does not exist.
He uninstalled the “IIS URL Rewrite Module 2”, and “Skype for Business Server 2015, Web Components Server”, and re-run Skype for Business bootstrapper (Step 2 in the Deployment Wizard).
Cheers Joseph, good work spotting that.