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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:
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.
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.
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For VSPackages, that means a user can have several Visual Studio versions installed on the same computer. However, you cannot have side-by-side versions of your VSPackages loaded into a single version of Visual Studio.
You can install and use Visual Studio 2019 alongside previous versions of Visual Studio, including Visual Studio 2017, Visual Studio 2015, Visual Studio 2013, and Visual Studio 2012.
The installation will not attempt to uninstall older versions and we don't need to uninstall older version of VS 2015/2017, before installing the VS2019.
From what I have read there is potential for things to break: https://stackoverflow.com/a/27040641/3710110
But the 2 can co-exist on a single machine quite happily. I am going to take the plunge tonight. I will come back let you know how I get on. I am running VS 2013 Update 4 on Windows 8.1 OS.
UPDATE 2015-03-16 I have been developing mainly self-hosting web applications in VS 2013 for the past few days with VS 2015 CTP 6 installed on the same machine. I have not ran into any showstoppers so far :)
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