Adobe Reader 9 won't update


  1. Posts : 1
    Windows 7 Ultimate x64
       #1

    Adobe Reader 9 won't update


    When I click on the icon to update Adobe Reader 9, I get an error message that says that Windows Installer Service could not be accessed. Error 1601.

    I have no idea on what to do to fix this problem.
      My Computer


  2. Posts : 7,730
    Windows 7 Ultimate SP1 64-Bit
       #2

    You probably need to re-register the Windows Installer Service as this Microsoft article explains.

    "Disk Error -- Reserved Error (-1601)" error message when you try to install an Office update

    Useful list of error codes here: http://support.microsoft.com/kb/229683
      My Computer


  3. Posts : 69
    Win 7 64 bit
       #3

    Error 1601 is a Microsoft error code.

    Uninstall Acrobat Reader (via Control Panel, Uninstall software) - reboot, and download the new version of Acrobat Reader - then install.

    Paul
      My Computer


 

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