Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Avatar for Username

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

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

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

  • 2 iimpendulo
  • 15 inale ngxaki
  • 10 views
  • Impendulo yokugqibela ngu cor-el

JRobert11209
JRobert11209
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.

Isisombulu esikhethiweyo

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:

Funda le mpendulo kwimeko leyo 👍 4

All Replies (2)

beastmanrules
beastmanrules
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

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Isisombululo esiKhethiweyo

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: