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!

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.

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

FF no longer warns when closing multiple open tabs

more options

This happened very suddenly. Yesterday I got the warning before closing multiple tabs, today I do not. I added no new extensions. I have automatic updates set, so have been using the most recent version since it was released. Now the options page doesn't even have "warn before closing multiple tabs" as an option. I have tried every suggestion, and the last suggestion was to ask a new question (I don't know why). This is an important option for me as I have a touch screen device (Surface PRO) an often accidentally brush the close button (the x) and counted on the "Warn before closing" to prevent closing when I really don't want to close.

This happened very suddenly. Yesterday I got the warning before closing multiple tabs, today I do not. I added no new extensions. I have automatic updates set, so have been using the most recent version since it was released. Now the options page doesn't even have "warn before closing multiple tabs" as an option. I have tried every suggestion, and the last suggestion was to ask a new question (I don't know why). This is an important option for me as I have a touch screen device (Surface PRO) an often accidentally brush the close button (the x) and counted on the "Warn before closing" to prevent closing when I really don't want to close.

All Replies (3)

more options

Could you double-check this setting:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste warn and pause while the list is filtered

(3) If the browser.tabs.warnOnClose preference is bolded and "modified" or "user set" to false, double-click it to restore the default value of true

(4) If you are closing the last window accidentally, you might also want to try: double-click the browser.showQuitWarning preference to switch the value from false to true

more options

Thanks for responding, bug these were all suggested before and I tried them all. They did not solve the problem.

more options

Does the problem only occur when Firefox is shutting down, or does it occur when you have multiple windows open and close just one of them?

If Firefox is shutting down and is set to restore your previous session tabs and windows at startup, then it may not bother with a warning. I'm not sure if there is a workaround for that.