This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

FF 66 adobe flash player not working ?

more options

Adobe flash player not working for me in both w10-64bit and Linux-64bit ff 66.0.2 versions. I do not recall the last ff version that flash worked in.

Have the latest flash 32.0.0.156. for both. My Linux Chromium and w10 explorer play flash player applets just fine. The sandbox solution dom.ipc.plugins.sandbox-level.flash does not work any more, because there is no such thing in about:config in ff 66. Also tried to disable protected mode in about:config, and still won't start the flash player.

Any working solution ?

Adobe flash player not working for me in both w10-64bit and Linux-64bit ff 66.0.2 versions. I do not recall the last ff version that flash worked in. Have the latest flash 32.0.0.156. for both. My Linux Chromium and w10 explorer play flash player applets just fine. The sandbox solution dom.ipc.plugins.sandbox-level.flash does not work any more, because there is no such thing in about:config in ff 66. Also tried to disable protected mode in about:config, and still won't start the flash player. Any working solution ?

All Replies (1)

more options

Is there a pattern to the sites where Flash does not work? Does Adobe's test page work for you:

https://helpx.adobe.com/flash-player.html

Also, just in case your activation setting changed: Why do I have to click to activate plugins?


Regarding the Sandbox preference, I do see it on 64-bit Windows:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste sandb and pause while the list is filtered

dom.ipc.plugins.sandbox-level.flash should be the second item.