We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Top of Browser Window has Vanished

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by cor-el

more options

Firefox was working fine up until about an hour ago. In the attached image, you can see the bookmarks toolbar, but everything above it is white. There's no tab. There's no menu (File, Edit, View, etc.). There's no URL bar/search bar, and no little X to close the window when I'm done.

It is not in full screen mode, although if I hit F11 twice the menu, etc. will miraculously appear.

I tried deleting the xulstore.json file as one post here suggested. I tried refreshing Firefox.

I have a Windows 10 computer running Firefox 79.0.

Did I click some weird keystroke combination? How can I make my screen look normal again?

Firefox was working fine up until about an hour ago. In the attached image, you can see the bookmarks toolbar, but everything above it is white. There's no tab. There's no menu (File, Edit, View, etc.). There's no URL bar/search bar, and no little X to close the window when I'm done. It is not in full screen mode, although if I hit F11 twice the menu, etc. will miraculously appear. I tried deleting the xulstore.json file as one post here suggested. I tried refreshing Firefox. I have a Windows 10 computer running Firefox 79.0. Did I click some weird keystroke combination? How can I make my screen look normal again?
Attached screenshots

All Replies (1)

more options

Does the menu bar appear if you press the Alt key or Alt+F to open the file menu ?

You can try to disable hardware acceleration in Firefox.

Close and restart Firefox after modifying the setting for changes to take effect.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.