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Why aren't my add-ons enabling?

Posted

I recently updated Firefox while my add-ons were disabled. Normally this would fall under the "Re-enable add-ons" thread you guys already have, but I'm not getting an error message about the add-ons. I just tried to re-enable them about five times (along with a couple days ago), and while I can get it to say "these will be enabled when you restart Firefox", restarting it doesn't enable them. They just go back to being disabled. The ones I want to enable are NoScript and DownloadHelper.

Chosen solution

hello, this sounds like the files in your profile folder that store the information about your extensions might have become corrupted. please go to firefox > help > troubleshooting information > profile - show folder... then windows explorer should open up your profile folder. in there look for the files named extensions.ini, extensions.sqlite, extensions.sqlite-journal (and in some cases also extensions.txt, extensions.rdf). delete or rename those files and quit firefox, they will be regenerated the next time you launch firefox.

also see Corrupt extension files

Read this answer in context 5

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.17.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 11.6 r602
  • Adobe PDF Plug-In For Firefox and Netscape "9.5.4"
  • Google Update
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • Picasa plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • 5.1.10411.0
  • NPWLPG
  • npapicomadapter
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0

More Information

philipp
  • Top 10 Contributor
  • Moderator
2043 solutions 8891 answers

Chosen Solution

hello, this sounds like the files in your profile folder that store the information about your extensions might have become corrupted. please go to firefox > help > troubleshooting information > profile - show folder... then windows explorer should open up your profile folder. in there look for the files named extensions.ini, extensions.sqlite, extensions.sqlite-journal (and in some cases also extensions.txt, extensions.rdf). delete or rename those files and quit firefox, they will be regenerated the next time you launch firefox.

also see Corrupt extension files

Question owner

Thanks so much! Have a fun rest of your day!

DrHow 0 solutions 15 answers

I encountered a similar problem, and tried the solution suggested here. It did not work, and I was hassled with a lengthy series of tabs asking me to verify each add-on installation individually. (It even implied, incorrectly, that I needed to restart after each such approval.) Afterwards, my add-ons all still showed as being disabled in the sidebar, even though they were, in fact, working. Furthermore, the Enable and Disable buttons were not doing anything.

I decided the culprit might be All-in-One Sidebar. I installed the latest version, and the problem disappeared. In retrospect, I suspect that about:addons would have worked. It was just the sidebar access to add-ons that was fouled up.