Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Somethign in my profile is preventing some add-ons from loading correctly

  • 5 replies
  • 1 has this problem
  • 1 view
  • Last reply by FredMcD

more options

I can install all the add-ons i want, but some of them don't load correctly or can't be used at all. I believe it has something to do with my profile or my about:config settings. I know this because I downloaded Firefox Nightly and installed one of the add-ons that was not working correctly and it worked fine. Then I copied my profile from Firefox over to Firefox Nightly and the same problem was replicated.

Currently I have found four add-ons that do not load correctly: Fast QR Code Generator, Forecastfox, FoxClocks, uBlock Original

The problem I'm getting is that for the add-ons I either just get the icon and that's it or in settings, only half the settings are loaded and I can't save any modifications made.

Name: Firefox Version: 70.0.1 Build ID: 20191030021342 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0 OS: Windows_NT 6.1

I can install all the add-ons i want, but some of them don't load correctly or can't be used at all. I believe it has something to do with my profile or my about:config settings. I know this because I downloaded Firefox Nightly and installed one of the add-ons that was not working correctly and it worked fine. Then I copied my profile from Firefox over to Firefox Nightly and the same problem was replicated. Currently I have found four add-ons that do not load correctly: Fast QR Code Generator, Forecastfox, FoxClocks, uBlock Original The problem I'm getting is that for the add-ons I either just get the icon and that's it or in settings, only half the settings are loaded and I can't save any modifications made. Name: Firefox Version: 70.0.1 Build ID: 20191030021342 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0 OS: Windows_NT 6.1

All Replies (5)

more options

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

Type about:support in the address bar and press enter.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder

Linux: Under the page logo on the left side, you will see Application Basics. Under this find Profile Directory. To its right press the button Open Directory.

Delete all extensions* files and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

After, restart Firefox.

See "Corrupt extension files":

+++++++++++++++++++++++++++ You will have to approve the updating one last time.

more options

This did nothing but get rid off all my add-ons. The first and only add-on I added was uBlock Original and I still had the same problem.

For the uBlock Original add-on the problem is that it does not block anything because only half the setting get loaded and nothing I change in the settings gets saved.

Is there another solution?

more options

Now since I deleted all the files that store the extensions registry. Most or all of my add-ons don't seem to work at all...

I think what I have to do is start a new profile and sync everything but options and add-ons. Will report back if this works or not...

more options

This is a time consuming workaround, but it worked. I finally broke down and created a new profile. I synced everything but the options and add-ons. Then i added all my Add-ons and set up Firefox like I wanted. This seemed to work.

I still don't know what the original problem was and would still like to know in-case it happens again.

more options

That was very good work. Well Done. Please flag your last post as Solved Problem as this can help others with similar problems.