Hi Kamath,
The help server is installed on the same machine as the AOS and the client. I open the help viewer on the same machine as the client.
In the browser, I get: HTTP Error 503. The service is unavailable. (and the Pool enters a stopped state)
In the event log, I get these numerous times:
"The Module DLL 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\isapi\owssvr.dll' could not be loaded due to a configuration problem. The current configuration only supports loading images built for a x86 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture mismatch error, see go.microsoft.com/fwlink
AND
"A listener channel for protocol 'HTTP' in worker process '40536' serving application pool 'DAX2012Help - 9640' reported a listener channel failure. The data field contains the error number."
AND
"Application pool 'DAX2012Help - 9640' is being automatically disabled due to a series of failures in the process(es) serving that application pool."
I then changed the 'Enable 32-bit applications' property for the Application Pool to FALSE, but now in the browser I get:
An unexpected error has occurred. (showing in SharePoint style)
In the event log, I get:
"WebHost failed to process a request.
Sender Information: System.ServiceModel.Activation.HostedHttpRequestAsyncResult/44313942
Exception: System.Web.HttpException: The service '/DAX2012Help/HelpService.svc' does not exist. ---> System.ServiceModel.EndpointNotFoundException: The service '/DAX2012Help/HelpService.svc' does not exist.
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.HandleRequest()
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.BeginRequest()
--- End of inner exception stack trace ---
at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
Process Name: w3wp
Process ID: 34844"