https://support.mozilla.org/en-US/questions/971930
In Tools - Options -Tabs, I have already disabled "Warn me when closing multiple tabs". However, this only affects the action when you click the red cross button at the right-top corner.
If you want to disable the warning when you right-click a tab and choose "Close Tabs to the Right" or "Close Other Tabs", do the following:
In Tools - Options -Tabs, I have already disabled "Warn me when closing multiple tabs". However, this only affects the action when you click the red cross button at the right-top corner.
If you want to disable the warning when you right-click a tab and choose "Close Tabs to the Right" or "Close Other Tabs", do the following:
- In the Location bar, type "about:config" and press Enter.
- In the Search field box at the top, type browser.tabs.warnOnCloseOtherTabs.
- Double-click the browser.tabs.warnOnCloseOtherTabs preference to set its value to false.
