- Firstly, launch the RUN dialogue box by pressing Windows + R altogether.
- Now inside the empty text field, type control, click on OK, and it will launch the Control Panel interface. If prompted by UAC (User Account Control), click on Yes.

- On the Control Panel window, navigate to the search bar, type internet options and click on Internet Options from the search results.
- Now on the Internet properties prompt, navigate to the Advanced menu from the horizontal bar, and further under the Settings section, scroll down the list of options until you reach the Security category.

- Now inside the Security section, make sure that all the checkboxes related to Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2 are ticked; if not, then tick those boxes and then click on Apply.
Thereafter, launch the Notepad++ and again try to install the plugins.
Fix 4: Install the latest version of Notepad++
At times when the older version of Notepad++ is not compatible with the latest security updates on Windows 10, the user might find it impossible to install the plugins. However, as per a lot of suffered users, the said issue got resolved for them when they installed the latest version of Notepad++. For doing so, follow the steps given below:
Note: As per users’ suggestion, uninstall the current Notepad++ version and then remove any remnant files before installing the latest version of Notepad++.
- Firstly, launch the RUN dialogue box by pressing Windows + R altogether.
- Now inside the empty text field, type appwiz.cpl and then click on OK. It will launch the Programs and Features window. If prompted by UAC (User Account Control), click on Yes.
- Now inside the Program and Features window, scroll down the list of installed applications and locate Notepad++. Click on it and then select Uninstall.
- Now navigate to File Manager and then to C:\Program Files\Notepad++. Further, remove any remnant files leftover from the old installation of Notepad++ and then restart your computer.
- Once your system restarts, launch your browser and then go to the official download page of Notepad++.
- Now click on the download button near to the latest version of Notepad++ and when the installation executable is successfully downloaded, right-click over it to select Run as Administrator.
- Now follow the on-screen instruction in order to complete the installation process and then restart your system.
- Finally, launch the recently installed version of Notepad++ and try to install the plugins. The said error might not exist now.
Fix 5: Install the Notepad++ Plugin Manually:
The last solution you can try is to install the Plugins manually (those which were failing). Then paste them into the right location, and then finally import them into the main Notepad++ application. For doing so, follow the steps given below:
- Before you begin, make sure Notepad++ is closed and is not even running in the background.
- Now launch a browser and navigate to the download page of Notepad++ Plugins. Here click on the Download button and begin the process.
- Once the downloading process gets completed, extract the contents of the archive you’ve just downloaded to C:\Program Files\Notepad++\plugins.

- Now launch Notepad++, click on Settings from the horizontal menu, and then select Import > Import Plugins. Further, pick from the list of plugins the ones you want to sideload.
- After that, Notepad++ might display a restart message; if yes, restart, and then you will see the new plugin inside the app.
Plugins in Notepad++ are definitely effective and helpful for users, and if they fail to install the same, the situation can become really annoying. However, after using any of the fixes from the list mentioned above, one can swiftly resolve the “Notepad++ Plugins Failing to Install on Windows 10” and install the Plugins again.
At the end of this article, we hope that you will find all the information mentioned here as helpful and relevant. If you have any queries or feedback, please write down the comment in the below comment box.