More than year ago, I wrote blog post article how to delete project from tfspreview.com. I can say this blog post is one of the most visited post, probably because lot of people wanted to delete project but it is not so obvious task.
Today I run in the similar problem with Windows 8.1 OS and Visual Studio 2013 RTM version. In fact when I open Start Screen I wasn’t unable to find icon VS2013 x64 Native Tools Command Prompt, but only command prompt for VS 2012 which is not working because you have no VS2012 installed.
Actually you have to choose Visual Studio Tools folder from Visual Studio 2013 category.
Windows Explorer Window is opened.
Now select VS2013 x64 Native Tools Command prompt, and follow instruction in the previous blog post from this link.