Have tried everything under the sun but Adobe Flash will not install on IE9 OR Firefox 3.6.24.
The error is 'CERTIFICATE AUTHENTICATION FAILED'. I have tried uninstalling then reinstalling and still get the same error. ActiveX Filtering is unchecked so this is not the problem. I installed the certificate successfully but still the same error. Can anyone lend a hand here?
Have you tried installing from our stand alone installers? You can find them here:
I suspect we're having a problem with the code signing mechanism in Windows, though I'm surprised that saving and running the stand alone installer didn't help. Could you run the "Fix It" utility that Microsoft provides in the Resolution section of this KB article to see if that helps?
Have you tried here since this is system problem.
i have the same problem. When trying to install the new flash it gives me the cirtifiicate of authentication error and will not let me install flash on Windows 7 64 bit. any help?? I tried the fix it utility also,
Could you guys check the following out for me?
1. Go to the start menu and type the following: gpedit.msc
2. In the Local Group Policy Editor dialog that appears, navigate to the following dialog:
User Configuration > Windows Settings > Internet Explorer Maintenance > Security > Authenticode Settings
You should see a dialog similar to this
Please verify that the "Enable trusted publisher lockdown" checkbox is unchecked. If checked, uncheck it and click OK.
mine wasnt checked...
Date: Tue, 31 Jan 2012 17:18:46 -0700
Subject: Re: Problems with certificate Authentication in IE9 Problems with certificate Authentication in IE9
Re: Problems with certificate Authentication in IE9
created by Chris Campbell in Installing Flash Player - View the full discussion
Could you guys check the following out for me? 1. Go to the start menu and type the following: gpedit.msc2. In the Local Group Policy Editor dialog that appears, navigate to the following dialog: User Configuration > Windows Settings > Internet Explorer Maintenance > Security > Authenticode Settings You should see a dialog similar to this
http://forums.adobe.com/servlet/JiveServlet/downloadImage/153890/1-31- 20124-17-19PM.png Please verify that the "Enable trusted publisher lockdown" checkbox is unchecked. If checked, uncheck it and click OK. Thanks,Chris
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I'm running Windows 7 Pro (64-bit)
I just had the exact same error, the following worked like a charm for me...
Download latest standalone installer and save to the root of C:
Download and run the Flashplayer Uninstaller
Install latest standalone version with elevated admin permissions - "holding <SHIFT> button down, right-click the downloaded file and 'run-as' another user, enter your local admin user creds, ie. administrator & Pa$$w0rd and installer will start".
Bounce machine (reboot!)
Browse to this link http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html and confirm you are on the latest version.
Hope this helps someone!
Message was edited by: sPaNgLeMoNkEy
Message was edited by: sPaNgLeMoNkEy
I'm having this same issue, after unblocking the installer I just get an error that certificate authentication has failed and the program doesn't run. After unblocking I was finally able to run the uninstaller though and go back to an archived version 11.2.
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