This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Əgər kömək lazımdırsa lütfən yeni sual verin.

Lost all Add Ons

  • 4 cavab
  • 2 have this problem
  • 5 views
  • Last reply by FredMcD

danpbphoto
danpbphoto
more options

Tried to download a new favicon add-on. Now when I click on Tools>Add-Ons> FF opens a new tab called "Add-ons Manager" and all previous add-ons/plug ins are gone. Yet Add-on bar is still ok but not complete with all add ons. Any ideas? Dan

Tried to download a new favicon add-on. Now when I click on Tools>Add-Ons> FF opens a new tab called "Add-ons Manager" and all previous add-ons/plug ins are gone. Yet Add-on bar is still ok but not complete with all add ons. Any ideas? Dan

Modified by danpbphoto

All Replies (4)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the extensions.* files (e.g. extensions.json, extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled or not compatible extensions in "Firefox/Tools > Add-ons > Extensions" then click the Tools button at the left end of the Search bar to check if there is a compatibility update available.

If this hasn't helped then also delete the addons.json file.

danpbphoto
danpbphoto Question owner
more options

cor-el said

It is possible that there is a problem with the file(s) that store the extensions registry. Delete the extensions.* files (e.g. extensions.json, extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry. New files will be created when required. See "Corrupt extension files": If you see disabled or not compatible extensions in "Firefox/Tools > Add-ons > Extensions" then click the Tools button at the left end of the Search bar to check if there is a compatibility update available. If this hasn't helped then also delete the addons.json file.
danpbphoto
danpbphoto Question owner
more options

When you click on Add-ons- nada, nothing zilch..opens a new tab named add-ons..I reset FF and had to manually restore all add-ons and plug ins..now ok..

FredMcD
FredMcD
more options

Have you tried re-installing the add-ons?

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox.

Now open the Add-ons Manager. Is the problem still there?

Separate Issue; Your System Details shows;

Installed Plug-ins

Adobe PDF Plug-In For Firefox and Netscape 11.0.12 Adobe PDF Plug-In For Firefox and Netscape 15.8.20082
Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer.

These can't get your data back, but will help in the future.

These add-ons can be a great help by backing up and restoring Firefox

FEBE (Firefox Environment Backup Extension) {web link} FEBE allows you to quickly and easily backup your Firefox extensions, history, passwords, and more. In fact, it goes beyond just backing up -- It will actually rebuild your saved files individually into installable .xpi files. It will also make backup of files that you choose.

OPIE {web link} Import/Export extension preferences