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This tip is about the how to Fix ‘Firefox Add-Ons Not Working on PC’ Issue. So read this free guide, How to Fix ‘Firefox Add-Ons Not Working on PC’ Issue. If you have query related to same article you may contact us.
How to Fix ‘Firefox Add-Ons Not Working on PC’ Issue – Guide
Add-ons let you customize Firefox with extras features. You can download add-ons to compare prices, check the weather, customize the look of Firefox, listen to music, and even update your Facebook page.
An extension’s failure to install may be due to issues with the extension, Firefox settings, or Firefox version you are using. This page discusses the various reasons for installation issues, as well as what you can do to resolve them.
how to fix it
Add-on is not supported
If your installed version of Firefox does not fall into this range, installing the add-on will result in an error indicating that the add-on is not supported. If your version of Firefox is incompatible with the add-on, you can:
Firefox prevented this site from installing an unverified add-on
Firefox protects you from malware and browser hijackers by blocking third-party add-ons that are not digitally signed and verified by Mozilla.
The add-on has a high risk of causing stability or security issues and cannot be installed
Certain add-ons have been blocked by Mozilla because they are unsafe.
Firefox prevented the site from prompting you to install software
By default, Firefox allows you to install add-ons only from trusted websites. If the site from which you are installing the add-on is not in the list of trusted sites, a yellow bar will appear at the top of the webpage with a message similar to this one:
To allow the site, click Allow in the yellow bar.
To add the site to the trusted sites list:
![Fx89Buttonmenu](https://www.compsmag.com/wp-content/uploads/2021/11/1638102790_112_How-to-Fix-%E2%80%98Firefox-Add-Ons-Not-Working-on-PC-Issue.png)
You are prompted to download the add-on instead of installing it
Some sites serve as add-on downloads, requiring you to download the file to your computer before installing it.
- Download the file to your local computer.
- click on the menu button
, click and select.
- To add the downloaded add-on to the list of available add-ons, drag and drop the file into the Add-ons window. The add-on is added to the list.
- The installation process should begin.
Corrupted extension files
1. Open your profile folder:
![Fx57menu](https://www.compsmag.com/wp-content/uploads/2021/11/1638102790_995_How-to-Fix-%E2%80%98Firefox-Add-Ons-Not-Working-on-PC-Issue.png)
2. Click on the Firefox menu and select.
3. Delete the following files:
4. Restart Firefox.
Final note
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