We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox won't play videos after Windows 10 update 1607

more options

I get this error message when playing videos after Windows 10 update. I uninstalled and re-installed latest version of Adobe Flash. Shockwave is activated in plugins.

I get this error message when playing videos after Windows 10 update. I uninstalled and re-installed latest version of Adobe Flash. Shockwave is activated in plugins.
Attached screenshots

All Replies (3)

more options

Crashes or other problems with certain multimedia content in Firefox (such as Flash videos, animations or games) can often be resolved by performing the steps in these Knowledge Base articles:

Please tell us if this helped!


If the issue started occurring after upgrading to Windows 10 or after a Windows 10 update, please try reinstalling Adobe Flash Player.

Modified by Wesley Branton

more options

I found the problem. As of yesterday, Firefox videos no longer work with Adblock. (They work when I disable Adblock.) So the solution is simple: permanently switch to Chrome, which plays all videos with Adblock.

more options

You shouldn't have any issues with using Adblock and playing videos. Please ensure that you have the Adblock Plus add-on and not a fake copy.

Nevertheless, Mozilla does not develop or maintain add-ons, so you will need to get into touch with the Adblock team to advise them about the issue. You can also add the websites with issues to the whitelist.

Sorry for any inconvenience.