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Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

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New User

Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Everytime I open Firefox I get two tabs starting. One is my regular homepage and the other is https://www.mozilla.org/en-US/plugincheck/. I fixed the one plug in I wanted to fix but now I can't get rid of the plugincheck tab. The "Automatically check for updates" is disabled in the Tools-options-advanced-updates section of FFox but the extra tab persists.

1 ACCEPTED SOLUTION

Accepted Solutions
New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

FIXED!!! Despite your good suggestion, I hated to throw out the baby with the bath water, knowing that the PROBLEM must be something tiny within the works, although difficult to find, I think I've fixed this problem. It's been two days and there has been no reoccurence of duo tabs. I'll begin with my train of thought followed by the solution.

Because the problem only began early this month I thought I'd look at every file inside the C/ Program Files / Mozilla Firefox folder looking MANUALLY for any files that were Modified recently. I saw a file called : nppdf32.dll (102kb) that was modified 3 Oct 2012 so deleted it to see what happens. (moved to desktop folder) Sure enough, after rebooting, it was re-created automatically by the same name (85kb) and everything works normally without Firefox dashing off to Mozilla's 'check plugin' page.

Stability and contentment have been achieved, Stav

17 REPLIES
Regular User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

If you update your firefox to the lastest version maybe it will fix your problem https://www.mozilla.org/en-US/firefox/new/

Site Moderator

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

See these articles for some suggestions:

If you do not keep changes after a restart then see:

See also:

New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Hi,

thanks for your reply. I have changed the home page a couple of times and there aren't multiple home pages listed. It appears that all my preferences are properly saved. I still get two tabs opening when I start FF.

Al kruhm

Site Moderator

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Did you try to check for problems with preferences?

Try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default values.

You can also try to delete the addons.sqlite file and the pluginreg.dat.

You can use this button to go to the Firefox profile folder:

New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Hi, I did try running FF in the safe mode and disabling add-ons and restoring default preferences but this didn't help. What I did do was to Uninstall FF 3.6.28 which I was using, including all the prefs, bookmarks, etc., and to re-install an old version 2.0.0.20. I re-installed my bookmarks and reset my pref's and it's been OK the last 5 or so times I've started it. Only time will tell <G>.

One of the things that confuses me is how I got into this predicament in the first place.

Thanks, Al kruhm

New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Hi, Thanks for your response.

I was able to fix my problem bu uninstalling FF 3.6, including preferences, etc., and reinstalling an earlier version, 2.0.0.20, which works for me. What I don't know is how I got the problem in the first place.

Regards

Al

Site Moderator

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

You should not go back any further (2.0.0.20 is really really too old and won't work on a lot of websites) and either stay with 3.6.28 or better update tomorrow to Firefox 16.

If you can't fix your current profile then create a new profile.


Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

Thank you. I'll try 3.6 again.

New User

Re: Whenever I start Firefox I get two windows, One is my regular home page, the other is a Mozilla plug-in check.

I too have this problem where when you first launch FireFox (mine is the lovely & solid V3.6.11) you get two tabs loading at the same time with the forground one (2nd one) being the Mozilla PluginChecker page: It was useful to see it the first time but having made its point is getting scary with its relentlessness.

Is this Mozilla's intention or malware or a bug? Upgrading to the latest FireFox is NOT an option for me, and by the sound of some of the folks in the forum can be regrettable. I tried upgrading once and it broke too many profile elements, so have been happily loving the less intrusive and more stable 3.6.11.

Your biggest fan, Stav

One additional detail for those fixing this: My homepage is intentionally BLANK. When I open Firefox it's fine and sits there quietly. The double tab dilemma occurs once you ask it to go to any site or if you click on a link to launch FF. Once you close that tab its fine until you quit.