Is it safe to install Visual Studio 2015 Preview side-by-side Visual Studio 2013? Can I uninstall VS 2015 Preview if VS 2013 stops working?
UPDATE:
I never had issues to install and use different versions of VS side by side.
Its about Visual studio 2015 Release (should be fine for RC also) Microsoft says "You can install and use Visual Studio 2015 alongside Visual Studio 2013 and Visual Studio 2012. It can also be installed on top of Visual Studio 2015 RC without having to uninstall RC"
https://www.visualstudio.com/en-us/products/visual-studio-2015-compatibility-vs.aspx