This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

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

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

  • 2 (ردّان اثنان)
  • 15 have this problem
  • 18 views
  • آخر ردّ كتبه cor-el

more options

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.

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.

الحل المُختار

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:

Read this answer in context 👍 4

All Replies (2)

more options

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

more options

الحل المُختار

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: