Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多
已解決 封存

3 days ago Firefox suddenly took over my entire screen. I can't see or access "Bookmarks", etc.

cor-el replied
Gail_Campbell

Why did the window enlarge & take over the entire Window? Howcan this be corrected?

I tried re-installing Firefox through Internet Explorer and that didn't change how Firefox is acting.

Why did the window enlarge & take over the entire Window? Howcan this be corrected? I tried re-installing Firefox through Internet Explorer and that didn't change how Firefox is acting.

所有回覆 (5)

選擇的解決方法

Try hitting F11.

Not sure if this already posted. So just in case . . . it worked!! Thank you s much!  :)

See also Firefox > Full Screen and F10 -> View > Full Screen

If you are in full screen mode then hover the mouse to the top to make the Navigation Toolbar and Tab bar appear.
You can click the Maximize button at the top right to leave full screen mode or right click empty space on a toolbar and use "Exit Full Screen Mode" or press F11.

Thank you for the added information. I appreciate everything I can learn about Firefox from the community.