How do I install a VSIX file in Visual Studio?

"VSIX is a Visual Studio extension installer. You must have Visual Studio 2010 or newer in order to install them, but you should be able to install it by double-clicking the .vsix file. Alternatively you should be able to install it from within the VS Extension Manager (Tools->Extension Manger)

See more about VSIX files at Quan To's Visual Studio Extensibility blog"

"How to install Visual Studio Extensions

To summarise, there are three options:

Install via Extension Manager (Tools/Options)
Install via Visual Studio Gallery.com (download and open directly or save then double-click)
Install via ""xcopy"" into %localappdata%\Microsoft\VisualStudio\10.0\Extensions"

"VSIXInstaller
in
C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service"
"VSIXInstaller
in
C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service"

"When I double-click on vsix file, I get an error ""The requested operation requires elevation"". As a result,

I opened cmd as administrator and navigated to the target folder.
Type the vsix file name and hit enter.

VSIXInstaller showed up and started to execute the vsix file and I was able to complete the installation of the component. Hope this helps in case someone is having a similar trouble. Cheers"

The only option that you would see if you have at least one Visual studio version installed is to double click the file. I was able to install to both the Visual studio versions that I have using that.