title: Safe to install Visual Studio 2015 Preview side-by-side Visual Studio 2013
body: <p>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?</p>
  
  <p><strong>UPDATE</strong>:</p>
  
  <p>When I installed VS 2015 Ultimate Preview side-by-side VS 2013 Professional, I was able to use and uninstall VS 2015 Ultimate Preview without any issues.</p>
  
  <p>When I installed VS 2013 Ultimate Trial side-by-side VS 2013 Professional, I was unable to open VS 2013 Professional. Some features from the Professional edition would not work in the Ultimate Trial (e.g. UnitTest had some strange error). After I uninstalled the Ultimate Trial, some settings from Professional disappeared.</p>