I am Writing a PHP application that needs to run a back end .NET application. When creating a running the WCF web service out of the box, the PHP could not connect to the web service.

The problem:

The PHP returns "Caught exception: Cannot process the message because the content type 'text/xml; charset=utf-8' was not the expected type 'application/soap+xml; charset=utf-8'."

The reason:

WCF is running a new version of web services than expected by the PHP.

When trying to debug a WCF ( windows communication foundation) .NET 3.5 framework library, you might encounter a problem where Visual Studio (VS 2008) refuses to run or debug the WCF web service.

the problem:

The error you get from the WCF test client when trying to debug the WCF service is this - "WCF Test Client: Unrecognized option 'targetclientversion' specified"