Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Lees voor meer informatie dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Zoeken in Support

Vermijd ondersteuningsscams. We zullen u nooit vragen een telefoonnummer te bellen, er een sms naar te sturen of persoonlijke gegevens te delen. Meld verdachte activiteit met de optie ‘Misbruik melden’.

Meer info

Deze conversatie is gearchiveerd. Stel een nieuwe vraag als u hulp nodig hebt.

Updated to Firefox 26 and now two title bars appear

  • 2 antwoorden
  • 4 hebben dit probleem
  • 8 weergaven
  • Laatste antwoord van cor-el

libtechs
libtechs
meer opties

Hi,

I updated Firefox from version 21 to 26 (the PC is running Win 7 SP1 x86) and subsequently Firefox now displays two title bars (quite literally, I have two sets of Minimize, Maximize, and Close buttons) as well I am unable to browse to any page nor will any additional window such as Options, Downloads, etc open. I'd love to add Troubleshooting Information but that won't open either! Here's what I've tried so far:

1.) Uninstall Firefox and reinstall FF26 (no luck)

2.) Uninstall Firefox completely with Profile Information deleted as well and subsequently reinstall FF26 (no luck)

3.) Uninstall Firefox completely and deleted the \AppData\Roaming\Mozilla folder along with \AppData\Local\Mozilla folder as well and subsequently reinstall FF 25.0.1 (no luck)

4.) Uninstall Firefox completely and deleted the \AppData\Roaming\Mozilla folder along with \AppData\Local\Mozilla folder as well and subsequently reinstall FF 3.6.28 for kicks (no luck program doesn't even launch)

Considering I've tried to delete every mention of Firefox and this problem still occurs I'm guessing something other sort of file is either present or corrupted.

Any suggestions?

Hi, I updated Firefox from version 21 to 26 (the PC is running Win 7 SP1 x86) and subsequently Firefox now displays two title bars (quite literally, I have two sets of Minimize, Maximize, and Close buttons) as well I am unable to browse to any page nor will any additional window such as Options, Downloads, etc open. I'd love to add Troubleshooting Information but that won't open either! Here's what I've tried so far: 1.) Uninstall Firefox and reinstall FF26 (no luck) 2.) Uninstall Firefox completely with Profile Information deleted as well and subsequently reinstall FF26 (no luck) 3.) Uninstall Firefox completely and deleted the \AppData\Roaming\Mozilla folder along with \AppData\Local\Mozilla folder as well and subsequently reinstall FF 25.0.1 (no luck) 4.) Uninstall Firefox completely and deleted the \AppData\Roaming\Mozilla folder along with \AppData\Local\Mozilla folder as well and subsequently reinstall FF 3.6.28 for kicks (no luck program doesn't even launch) Considering I've tried to delete every mention of Firefox and this problem still occurs I'm guessing something other sort of file is either present or corrupted. Any suggestions?

Alle antwoorden (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
meer opties

Hopefully you get a backup of your bookmarks!

I think you've covered nearly everything. First thought at this point:

Could you rename or delete the Firefox program folder and then reinstall (no need to uninstall)? Some installers places extensions and plugins into that folder, and they are left in place during an upgrade or reinstall.

The folder is either:

32-bit Windows: C:\Program Files\Mozilla Firefox

64-bit Windows: C:\Program Files (x86)\Mozilla Firefox

cor-el
cor-el
  • Moderator
meer opties

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

  • Do NOT click the Reset button on the Safe Mode start window.