Adobe Flash Player or Flash Professional?
I'm receiving the same error with both....Adobe Flash Player and Adobe Reader. We can download the installers fine, but when executing the installer an error is received stating "Certificate Authentication Failed". Also, there are no issues downloading the offline versions and installing as this has been successful on a couple of test computers. But, due to my large environment, taking this route would be impactful to our company.
OS - Win XP, Win 7
Browser - IE7, IE8, IE9, FF15.0.1
Moving this discussion to the Installing Flash Player forum. You may also want to post with your concerns regarding Adobe Reader to the Adobe Reader forum - http://forums.adobe.com/community/adobe_reader_forums/adobe_reader.
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Download and run the offline installers