Recently I was setting up a Visual Studio 2010 solution on a client’s environment in order to perform some development work. In this case I was performing development that required use of some Project Server web services. In the Visual Studio solution I easy enough navigated right-click on project and selected Add Web Reference (see below).
In the resulting dialog box I click on the Web services on the local machine link (project server is installed on the development machine). When I did I received the error below:
After some research I decided to start Visual Studio 2010 as an Administrator:
This time, I had success!