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. Please ask a new question if you need help.

Browser theme disappearing after start

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

Apratim Pal
Apratim Pal
more options

After enabling any theme when I close and reopen Firefox it's theme disappearing. Version: 100.0.2(64 bit).

After enabling any theme when I close and reopen Firefox it's theme disappearing. Version: 100.0.2(64 bit).

All Replies (1)

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

Is this with a custom theme from the Add-ons website or also with a built-in (colorways) theme ?

You can check for problems with preferences. You can delete possible user.js and numbered prefs-##.js files and rename/remove the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in current Firefox releases.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).