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A
Anonymous
May 23, 2017
Question

"Unknown Publisher" when installing adobe flash player

  • May 23, 2017
  • 2 replies
  • 3292 views

I have tried to download Flash Player from the below link 

https://get.adobe.com/flashplayer/?no_redirect

But we get the failure as "Unknown Publisher" when installing. Please fix it and then give us a new version. Thanks heaps.

    This topic has been closed for replies.

    2 replies

    jeromiec83223024
    Community Manager
    jeromiec83223024Community Manager
    Community Manager
    May 24, 2017

    I'm just trying to think of reasons why signature validation might fail on an individual machine.  If you don't have the latest updates for Windows 7 installed from Windows Update, I would make sure that the system is patched.  You may be missing updates to Certificate Authority root or intermediate certificates that are necessary for validating the trust chain on our developer signature.  It's also possible that if your system clock is set to a wrong date and time, the certificate may fail to validate.

    A
    Anonymous
    May 25, 2017

    FP22 can be installed in my PC but FP25 can't be installed due to 'publisher unknown'. Can you please compare the difference between the 2 versions and fix the problem on FP25 to upgrade it.

    Please review above screenshots. The downloading link is below:

    https://get.adobe.com/flashplayer/

    A
    Anonymous
    June 23, 2017

    I have installed flashplayer22_0r0_209_win.exe successfully.

    But 25.0.0.171 and 26.0.0.131 will give attached error "Unknown Publisher". Can you please compare the version

    flashplayer22_0r0_209_win.exe with 25.0.0.171 and 26.0.0.131 to find out why FP25 and FP26 not work but FP22 is ok ?

    Thanks!

    ridhij4208356012135538
    Adobe Employee
    ridhij4208356012135538
    Adobe Employee
    May 23, 2017

    Hi,

    What OS and browser are you observing the above error on?

    Thanks!

    A
    Anonymous
    May 23, 2017

    OS is win7, browser is ie8

    _maria_
    Community Manager
    _maria_Community Manager
    Community Manager
    May 23, 2017

    Hi jasonwang ,

    What is the name of the installer file that is returning 'publisher unknown'?  I just downloaded flashplayer25ax_ra_install.exe and the file contains the digital certificate (right-click > Properties > Digital Signatures).  Due to the third party optional offers and various supported languages we actually have numerous inline installer files.  Providing the exact file name enables us to quickly identify the potentially problematic installer.

    Thank you.

    --

    Maria

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