How to unblock Flash content in Mozilla Firefox

Once one of the most widely used technologies for displaying media-rich content on the web, Adobe Flash has been deprecated and is now on its way out. Although, by default, Mozilla disabled Flash in their beloved Firefox in preparation for the platform's end of life (scheduled by Adobe at the end of 2020), you can still use it if you need to access websites that rely on Adobe Flash. This tutorial shows you how to unblock Flash Player content in Firefox and allow Flash to run on the sites you trust:

NOTE: This tutorial covers Mozilla Firefox version 70, or newer, for Windows. The procedure involved for other operating systems may differ.

First things first: Is Flash Player already installed?

Mozilla Firefox does not come with the Adobe Flash plugin built in, so, unless you manually install Adobe Flash Player, Flash content is not run by the websites you visit. Furthermore, when you access a site that uses Flash, there is no message or notification displayed to let you know about Flash not working in Firefox or about needing the Flash plugin to see the entire site's content. The best way to figure out if Flash is already installed is to access this page on Adobe's website. Compare the page you see in your browser with the screenshot below and, if you don't have anything displayed in the highlighted area either, follow the steps illustrated in this tutorial.

The highlighted area is blank if you don't have Adobe Flash

Step 1. Download Adobe Flash Player

If you want to see Flash content in Firefox, you must first download and install Adobe Flash Player. To download Adobe Flash Player, use Firefox to go to its official download page.

In the Optional offers section, make sure the boxes for the additional software are unchecked, unless you want McAfee Security Scan Plus and McAfee Safe Connect installed on your computer as well. Then, click or tap the Install now button.

Press Install now to start your download

Wait while the download starts. A pop-up asks if you would like to save the installer. Click or tap Save File.

Press Save File to download the installer

The installer should be saved in Firefox's default downloads folder.

Step 2. Install Adobe Flash Player

Use the arrow button in Firefox's Toolbar to access your downloaded files. Then, click or tap on the installer.

Press on the installer to open it

When the User Account Control asks if you allow Adobe Flashplayer Installer to make changes to your device, press Yes, and the installer is launched, prompting you to "Choose your update option." For security reasons, we advise you to select the option "Allow Adobe to install updates (recommended)" and then click or tap Next.

Choose how Flash Player updates are handled

The installation process starts, displaying a progress bar to keep you informed. When it is done, you are asked to restart your browser. Press Finish and restart Mozilla Firefox.

Press Finish to close the Adobe Flash Player Installer

Step 3. Make sure the Adobe Flash Player plugin is added to Firefox (optional)

Once the Flash Player is installed, Firefox should, by default, offer you the option to allow Adobe Flash to run on sites. However, if you are a bit of a control freak (like yours truly), you might want to check the plugin's status and options.

To do that, click or tap on the Open menu button in the top-right corner and, then, press Add-ons.

Click or tap on Add-ons from the dropdown menu

In the Add-ons Manager window, make sure the Plugins tab is selected, then find Shockwave Flash in the list of plugins. Press the … (three dots) button next to it. The "Ask to Activate" option should be checked if you want to be able to load Flash content on the websites you visit.

Shockwave Flash should have the Ask to Activate option checked

Step 4. Enable Adobe Flash on trusted sites

Remember the page we used in the beginning to check if Flash Player was installed? Open it again and notice the differences. The (previously-blank) highlighted area now displays an icon resembling a LEGO piece, and you can see the same icon in the address bar, to help you manage plugin use. Click or tap on either of the icons.

The icon indicating plugins are available on the website

You are asked if you want to allow Adobe Flash to run on the site. Click or tap Allow.

Press Allow to run Adobe Flash on the site

Wait for a couple of seconds, and, with the help of Adobe Flash Player, you can now see the Version Information for Adobe Flash Player. Inception-ish, isn't it?

With Adobe Flash running on the site, you can see its Version Information

TIP: Keep in mind that Mozilla Firefox does not remember the trusted websites between sessions, so you have to repeat this last step whenever you reopen Firefox.

Now you know how to run Adobe Flash Player on websites when using Mozilla Firefox. Keep in mind that you can read our guides if you want to do the same for other popular browsers, like Google Chrome or Microsoft Edge.

Why do you need Adobe Flash Player?

As Adobe Flash Player is heading into the light at the end of the tunnel, more websites migrate towards other technologies, and fewer users need it in their browsers. Why do you need Adobe Flash Player? Do you think you will miss it? Comment below and let's discuss.