15 November 17, 13:37
How to fix "This add-on could not be downloaded because of connection failure" issue in Mozilla Firefox.
1. Go to the add-on's page. In my case, it was Enhanced Steam. It wouldn't download for me, despite the fact it did download, but the installation failed. My guess is that Firefox 57 blocks something.
http://www.enhancedsteam.com/download/
2. Right-click on the add-on file (XPI).
3. Save it to your PC using your web browser or download manager.
4. Open the following page in Firefox.
5. Drag the add-on XPI file to the page, and it will be installed.
![[Image: 8BSnp6Ql.jpg]](https://i.imgur.com/8BSnp6Ql.jpg)
1. Go to the add-on's page. In my case, it was Enhanced Steam. It wouldn't download for me, despite the fact it did download, but the installation failed. My guess is that Firefox 57 blocks something.
http://www.enhancedsteam.com/download/
2. Right-click on the add-on file (XPI).
3. Save it to your PC using your web browser or download manager.
4. Open the following page in Firefox.
Quote:about:addons
5. Drag the add-on XPI file to the page, and it will be installed.
![[-]](https://www.geeks.fyi/images/collapse.png)
