YouTube programs won’t run after a Firefox 58.0 update:

Mozilla Firefox is one of the popular browsers since Google Chrome, this is a favorite browser for web developers because there are many extensions for its development.YouTube may be a popular website for watching videos online, but it is not self-contained. It requires you to have the proper software on your system before its videos will play properly. If you are using Mozilla Firefox latest version then sometimes you face this problem YouTube won’t run after update Firefox. So if you want to solve this error then

Follow these Steps:

1.  Check Firefox Plug-in:

If YouTube won’t play in Mozilla Firefox, then you can check to see if Flash is properly installed on your system. Type “about plugins” into the browser’s address bar to view a list of all the software plug-ins that are currently working with Mozilla Firefox.

Firefox Plug-in:

If Flash is properly installed, you will see an entry for “Shockwave Flash” on the page that opens. If this entry is not present, then Flash is not installed and you need to install it before you can watch YouTube videos in Firefox.

2. Mac/Windows Installation:

• Mac users:

If you are running Windows or Apple’s OS X, then the installation process for Adobe’s Flash Player is straightforward and self-automating. You only need to navigate to the download page for Adobe Flash, select your operating system from the drop-down menu, and then select the latest version of the Flash player from the drop-down menu below it.

• Windows user:

If you are a Windows user, you need to make sure to select. The Flash version for “Other Web browsers”. After clicking the “Download” button, run the package that downloads the automated installation process to install Adobe Flash. You need to close down Firefox during this installation process for YouTube won’t run after update Firefox

3. Outdated Version of Firefox:

Usually, Firefox automatically downloads and installs updates as they become available from Mozilla. These updates can solve any issues — such as compatibility with the YouTube website — the browser has displaying YouTube videos. If your version of Firefox is too old, it may not be able to play YouTube videos.

You can manually update:

You can manually update the browser by opening the about window. Open the “Help” menu, and then select “About Firefox” to update. The browser to solve this error YouTube won’t run after update Firefox.

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