Notepad++ is one of the best open-source text editors available today. However, a lot of Windows 10 users have reportedly claimed that they were unable to install any Plugins on their Notepad++ installation. Users end up getting various error messages; however, the most common one amongst them is the “Installation Error: Installation of Compare failed.”
How to Fix Notepad++ Plugins Failing to Install on Windows 10?

Now there could be several possible reasons causing the same, including missing admin privileges, if the required transport layer security is disabled, in case you are using the outdated version of Notepad++, or when the Plugin Manager plugin is busted. However, with that, there are several fixes available as well. Have a look down below for more details.
FIX 1: Run Notepad++ as Administrator:
One of the prime reasons that lead to the “Notepad++ Plugins Failing to Install on Windows 10” issue is when Notepad++ lacks permission to manage the installation of new plugins. Notepad++ requires admin access for performing the tasks that include modifying the original installation. If your Notepad++ application has not received admin access, you might experience this issue occurring time after time.
In such cases, the best solution is to force OS to open Notepad++ with admin access and then further modify future launches of the app to open with admin access. For doing so, follow the steps given below:
- Navigate to the Notepad++ shortcut on your desktop screen, right-click over it and select the option Run as administrator from the context menu. Here if you receive the UAC (User Account Control), click on Yes.
- Now, as you have launched Notepad++ with administrator access, install the plugins once again, and you might not see the said error anymore.


