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

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
Archived

Tabs are not saving on shutdown

cor-el replied
sidhe3141

On closing Firefox, the script that saves tabs was running slow. I told it to continue anyway and checked "Do not ask me again", thinking that this would cause it to run the script even when running slow. Since then, windows with a large number of tabs open have not been saved. Is there a way to bring the "script is running slow" prompt back?

On closing Firefox, the script that saves tabs was running slow. I told it to continue anyway and checked "Do not ask me again", thinking that this would cause it to run the script even when running slow. Since then, windows with a large number of tabs open have not been saved. Is there a way to bring the "script is running slow" prompt back?

All Replies (1)

Reset the pref dom.max_script_run_time on the about:config page.