Service too busy error in WCF

Question

I intermittently get the following exception in my .Net WCF Service. \"The HTTP service located at http://MyServer/TestWCF/MyService.svc is too busy.\"

Am I missing

Answer 1

I just ran into this error, and it boiled down to a simple configuration problem. I had a service up on the exact same port and same interface (mock service). I ran the service with the appropriate command line switch to run the "original" service I intended. The error went away.

Answer 2

Make sure you check the inner exception, too; during our deployments, we disable the application pool of a WCF web service, and clients start getting this error during that time:

System.ServiceModel.ServerTooBusyException: The HTTP service located at https://ourserver.x.com/path/service.svc is too busy. ---> System.Net.WebException: The remote server returned an error: (503) Server Unavailable.

So in this case an HTTP error 503 is being (mis?)interpreted as "server too busy".