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Firefox frequently loses window focus

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New Contributor

Firefox frequently loses window focus

It seems that Firefox frequently loses window focus when I open a new page. It may be a bookmark, a link opened into a new tab via CTRL+Left-Click, or whatever. The following scenario always results in the window losing focus (for me).

  1. Open Firefox.
  2. Open this link and bookmark it.
  3. Close and reopen Firefox.
  4. Open the page just bookmarked using the bookmark list and don't touch the window.

I read this page daily, so when I start Firefox and open the page, I have to click in it so as to scroll, etc..

Firefox 13, Windows 7 Home Premium 64-bit

I wish this site had "Preview" for its posts. Geez Louise.

1 ACCEPTED SOLUTION
33 REPLIES
Site Moderator

Re: Firefox frequently loses window focus

What do you mean with losing focus?

Where does the focus go to?

Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).


There are a lot of restriction on this forum with the first post that creates the thread like unable to preview and attaching images.

New Contributor

Re: Firefox frequently loses window focus

You don't know what window focus means? When I say that the window has lost focus, I mean that Firefox does not respond to keystrokes or to scrolling via the mouse wheel. You must click somewhere inside the window to gain focus, then these things work. The most visible sign of focus is the color of the window. Without focus the window looks inactive, which it is. Focus does not go to any other window.

I tried safe mode and Firefox restarted without focus. So this would seem to eliminate add-ons and plugins.

New Contributor

Re: Firefox frequently loses window focus

RETierney, thanks for posting this issue. I have the same problem.

I'm on Firefox 13 with Windows 7 64-bit, and whenever I load Firefox up and go to a site like Youtube, my Firefox window loses focus shortly after the page loads. And it does it here and there seemingly randomly too. It's really annoying when I'm scrolling through a page and it does this, and then of course I have to click into the window again before I can continue scrolling.

Please Firefox team fix this on the next Firefox update!

BTW I tried using Firefox in Safe mode with all extensions disabled and it still does the same thing. I'm thinking this is inherently a Firefox issue.

Site Moderator

Re: Firefox frequently loses window focus

Did you try if it still happens in Safe mode or with all extensions disabled?

New Contributor

Re: Firefox frequently loses window focus

OK, I think I know what causes the problem: the Flash plugin. I'm using version 11.3.300.257.

When I disabled Flash on Firefox and loaded up Youtube, my window no longer loses focus. So I believe it's definitely the interaction between Firefox and Flash that is causing problems. No idea who's fault it is, but someone please fix it!

New Contributor

Re: Firefox frequently loses window focus

cor-el, reverting back to Flash 11.2 worked! Hopefully Firefox and/or Flash will resolve this issue with their next updates. Having your window constantly lose focus seems like a major UI issue and very high up on the annoyance scale.

BTW I don't know if there's a way to mark this issue as resolved, but as of now this is the solution.

New Contributor

Re: Firefox frequently loses window focus

Flash 11.3 added "Protected mode for Firefox (Windows® Only)". Shouldn't we want to keep that? I don't see downgrading as a real solution, just removing a symptom of the problem. Are there any other plugins that use the new protected mode? Do they behave the same way?

Site Moderator

Re: Firefox frequently loses window focus

Adobe and Mozilla are working on a solution for these problems, so this is only a temporarily downgrade in case one of the other proposed solutions aren't working.