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Ad Block Plus will not install. "Firefox could not install the file." What can I do?

Posted

Error message is Firefox could not install the file at

https://addons.mozilla.org/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail

because: Unexpected installation error Review the Error Console log for more details. -203

Error message is Firefox could not install the file at https://addons.mozilla.org/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail because: Unexpected installation error Review the Error Console log for more details. -203

Additional System Details

Installed Plug-ins

  • Default Plug-in
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • 6.0.12.775
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • NPFxFoto.DLL
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 10.1 r53
  • Next Generation Java Plug-in 1.6.0_22 for Mozilla browsers
  • 4.0.60129.0
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • NPWLPG
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Adobe PDF Plug-In For Firefox and Netscape

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6

More Information

I'd like to install this file. I have no idea what the Error Console File is. Any suggestions?

TonyE
  • Moderator
1034 solutions 8840 answers
This link should help - https://support.mozilla.com/kb/Unexpected+installation+error+-203+when+installing+add-ons