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Installed Plug-ins

Adobe PDF Plug-In For Firefox and Netscape "9.5.5" OutOfDate

Shockwave Flash 20.0 r0 Shockwave Flash 11.9 r900 Shockwave Flash 11.4 r402
Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer.

Flash: Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac

Then reinstall the latest version.

Flash Player Version 20.0.0.235
https://www.adobe.com/products/flashplayer/distribution3.html Note: Windows users should download the ‘’’active_x’’’ for “Internet Explorer,” and the ‘’’plugin’’’ for “Plugin-based browsers” (like Firefox).

Note: Windows 8 and Windows 10 have built in flash players and Adobe will cause a conflict.

Adobe still offers Flash 18.0.0.268 as its extended support release further down

Adobe PDF Plug-In For Firefox and Netscape: Adobe Reader Version 2015.009.20069 Note: McAfee Security is offered in the download.

Yahoo Toolbar: https://addons.mozilla.org/en-US/firefox/addon/yahoo-toolbar/

JUST TELL ME WHY YOU WON'T ALLOW MY "YAHOO TOOLBAR" BACK ON MY COMPUTER !!!!!

edited for language - please refer to the Mozilla Support rules and guidelines

Hailing Frequencies Closed.

We understand that you are upset, but using language like that is just plain rude. The vast majority of the support contributors here are just users like you, we don't work for Mozilla.

Something is wrong with some or all of the versions of the Yahoo Toolbar extension that are currently floating around out there. It is available both here - https://addons.mozilla.org/en-US/firefox/addon/yahoo-toolbar/ - and directly from Yahoo here - https://toolbar.yahoo.com/?.intl=us - , and maybe some other websites, too.

Some users can't get it to install at all, while other users have to re-install the Yahoo Toolbar extension, yet other get that "corrupt" message like you do.

Sorry, I don't have currently have an answer for you about how to proceed with getting that Yahoo Toolbar extension to install in Firefox. I will make a few inquires and see if I can get any action towards a solution, but it may take some time.

The Yahoo toolbar add-on becoming disabled in Firefox 43 is a known issue that Mozilla and Yahoo are working on.

Follow the instructions in the Add-on signing in Firefox article under Override add-on signing (advanced users) to toggle the xpinstall.signatures.required preference to false in the Firefox Configuration Editor. Important: Changing this preference is only a temporary solution which will no longer work in Firefox 44.

Followup: The Yahoo toolbar add-on has been updated. The latest version fixes the problem. If you have set the xpinstall.signatures.required preference to false in the Firefox Configuration Editor (about:config page) as a workaround, you can go back now and reset the preference to true.

The Yahoo toolbar add-on has been updated. The latest version fixes the problem. If you have set the xpinstall.signatures.required preference to false in the Firefox Configuration Editor (about:config page) as a workaround, you can go back now and reset the preference to true.