I just downloaded a VSIX file from the Visual Studio Gallery.
How do I install it in Visual Studio?
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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
The above answers didn't help me; I couldn't install it through the extension manager and there was not default application for
.vsix. However, I needed to open it (right click >
Open with...) with
Microsoft Visual Studio Version Selector and it worked.
Small update: For VS 2013, you need the corresponding version of NuGet: http://visualstudiogallery.msdn.microsoft.com/4ec1526c-4a8c-4a84-b702-b21a8f5293ca. Otherwise, the version selecter will tell you it's already installed on all fitting versions.
To summarise, there are three options:
If all the above options fail, try installing it from the VS Developer command-line. Here's how (on StackOverflow):
VSIXInstaller.exe /quiet some_extension.vsix
You can find VSIXInstaller here (on your local PC - depending on the Visual Studio version replace 14.0 by the version you're using):
C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE
To display the installer dialog(s), remove the
To uninstall a VSIX extension, you need to know its vsixID (here is described how to get it), then you can use
To install/uninstall VSIX files for a specific Visual Studio version, use the switches
/skuVersion:version; you can see all options of the command line tool if you type
VSIXInstaller.exe /? in the developer command prompt.
Did you know that the VSIX is nothing more than a ZIP file. After double clicking on it, the VS selector prompts you for each installed version of Visual Studio to install it too. This is where vs picks an arbitrary folder name and unpacks the content to the %AppData%\Local\Microsoft\VisualStudio##\Extensions folder. So Benjol was partially correct save for unpacking the files from the VXIS(again which is a Zip).
When I double-click on vsix file, I get an error "The requested operation requires elevation". As a result,
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
Just recently Visual Studio stopped opening my VSIX files when clicking Download on the Marketplace website. It kept asking me which application to use to open VSIX files. I was able to install them by browsing for the VSIXInstaller.exe file in the Visual Studio IDE folder, mine was here:
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\VSIXInstaller.exe"