The Notepad++ plugin installation may silently fail if the firewall or proxy server is not allowing the outbound connection by WinGup ( gup.exe). 1) Configure your Proxy server or Firewall accordingly If that doesn’t resolve the issue, one of the following fixes should help you install Notepad++ plugins successfully. If you’re running an outdated version, install the latest version from Cannot Install Notepad++ Pluginsįirst, make sure if you’re using the latest version of Notepad++. When the user clicks on the Plugins menu or opens the Plugins Admin page, the chosen plugin should show up in the Installed list. The command-line updater module ( gup.exe) downloads the chosen extension from the source website in the background, and the extension file (.dll) is copied to the Plugins folder.

The current instance of Notepad++ is closed.Notepad++ starts the command-line updater gup.exe elevated (run as admin) after getting the UAC consent from the user.

The user sees the “Notepad++ is about to exit” prompt.

When you attempt to install a Notepad++ plugin via Plugins Admin dialog, the following happens: Expected behavior during plugin installation

Notepad++ plugin manager update