2 Replies Latest reply on Jan 14, 2011 4:13 PM by Dave Merchant

    Adobe Reader Error | Windows 7 | FireFox


      Recently I reformatted my computer and upgraded to windows 7. Everything is working really well, up to today, where I need to open a PDF file.


      In FireFox I get this error

      Firefox could not install the file at




      because: Not a valid install package

      In Internet Explorer I get a unknown publisher error.


      I'm using Windows 7 Home Premium; 64-Bit




      If you need more information I can provide.




      Thanks in advance,


        • 1. Re: Adobe Reader Error | Windows 7 | FireFox
          MichaelKazlow MVP & Adobe Community Professional

          Have you tried installing Reader X?

          • 2. Re: Adobe Reader Error | Windows 7 | FireFox
            Dave Merchant MVP & Adobe Community Professional

            207 errors in Firefox indicate that the XPI file is corrupted. An XPI file is a special type of ZIP file containing the add-on and instructions for Firefox about how to install it. In this case it's the get++ add-on which is triggered when Firefox is asked to open a PDF file but there's no system application registered for that tile type - Firefox asks the database for a suitable plugin, is told that Adobe Reader is the one to get, and get++ is the download manager which Adobe uses to deliver browser plugins above a certain size.


            Assuming you're using the 32-bit version of Firefox (we don't have 64-bit support yet), the XPI package is OK on the server, but can sometimes be mangled by firewall software. You don't need to use it, as installing Adobe Reader "manually" from the Adobe website will add the browser plugins too.


            Simply visit http://get.adobe.com/reader/ and click the button.