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Browser is stuck in full screen mode, restarting doesn't help.

  • 2 replies
  • 15 have this problem
  • 2895 views
  • Last reply by cor-el

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I entered Full Screen mode on a website and now cannot get out of it. Restarting my computer doesn't help. Problem only exists when using Firefox, not other browsers. Firefox continues to open in Full Screen everytime I open it, and I have to restart in order to use another browser.

Chosen solution

Try to rename (or delete) the xulstore.json file in the Firefox profile folder.

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

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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 https://support.mozilla.org/kb/Safe+Mode https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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Chosen Solution

Try to rename (or delete) the xulstore.json file in the Firefox profile folder.

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