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.

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

Crash On Exit Clearing Personal Details

more options

I set Firefox to clear some of my personal details upon exit; open tabs, browsing history, search history, downloads, cookies and active logins, cache and site settings. I try to exit Firefox by selecting "Quit" from the menu. When I do, Firefox hangs; it starts clearing private data, but never finishes and never exits.

I set Firefox to clear some of my personal details upon exit; open tabs, browsing history, search history, downloads, cookies and active logins, cache and site settings. I try to exit Firefox by selecting "Quit" from the menu. When I do, Firefox hangs; it starts clearing private data, but never finishes and never exits.

All Replies (1)

more options

I "fixed" the problem by unchecking "synced tabs" under settings>privacy>clear private data on exit. It now clears private data and exits within seconds. But why would clearing synced tabs cause Firefox to hang?