You find a good extension, and you double click the *. vsix file. However, the installation is not started without any information. If you click the installer
Visual Studio Installer needs administrator privilege; the problem is the Windows never tells the user that it needs additional privilege. If you visit the event viewer, you will get that information. Furthermore, you can't install the extension on administrator mode just like .exe.
The workaround for this situation Is simple
- Open the Command Prompt and Run as an Admin
- Find the extension (.vsix)
- Execute the installer
- The extension installation will start for you
If you can't install the extension, it might be the extension is not compatible for your Visual Studio.