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Firefox updated to version 20.0 and now the themes don't work. Help?

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New Contributor

Firefox updated to version 20.0 and now the themes don't work. Help?

I've seen that it's more than just me with this problem. Firefox, please fix!

4 REPLIES
Site Moderator

Re: Firefox updated to version 20.0 and now the themes don't work. Help?

Are you in private browsing mode? How do I turn off Private Browsing?

New Contributor

Re: Firefox updated to version 20.0 and now the themes don't work. Help?

yes but i also don't want it to save any of the history or cookies.

Expert Contributor

Re: Firefox updated to version 20.0 and now the themes don't work. Help?

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Site Moderator

Re: Firefox updated to version 20.0 and now the themes don't work. Help?

hello, it is a known issue that light-weight themes are currently not shown when firefox is set to never remember history (a.k.a. always run in private browsing mode) in firefox/tools > options > privacy. this will be corrected in the upcoming firefox release.