Article ID: 2858349 - View products that this article applies to.
Consider the following scenario:
In this scenario, when you uninstall Visual Studio 2012 or Visual Studio 2013 Preview, the application that was not uninstalled is broken.
To work around this issue, repair the Visual Studio application that remains on your computer.
Check out the other known issues that you may experience after you install Microsoft Visual Studio 2013 Preview
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2858349 - Last Review: June 26, 2013 - Revision: 1.0