You now have three options:

• Clicking the Exit button cancels your attempt to get into Firefox's Safe Mode.
• Clicking the Continue in Safe Mode button will temporarily disable your extensions and themes, turn off hardware acceleration and reset toolbar and button customizations. When you leave Safe Mode and start Firefox up normally, your extensions, themes, and settings will return to the state they were in before you entered Safe Mode.
• The Make Changes and Restart button is only enabled if you select one of the boxes above it. See the Make permanent changes to Firefox in the Safe Mode window section below for more information.

You now have two options:

• Clicking the Start in Safe Mode button will temporarily disable your extensions and themes, turn off hardware acceleration and reset toolbar and button customizations. When you leave Safe Mode and start Firefox up normally, your extensions, themes, and settings will return to the state they were in before you entered Safe Mode.
• Clicking the Reset Firefox button will restore Firefox to its factory default state while saving your essential information. See Reset Firefox – easily fix most problems for more information about this option.

Make permanent changes to Firefox in the Safe Mode window

When you start Firefox in Safe Mode, you can elect to make the following permanent changes by selecting a checkbox and clicking the Make Changes and Restart button.

• Disable all add-ons: If you select this box and then click Make Changes and Restart then Firefox will start back up in its normal mode, except all your extensions, themes and plugins will be disabled (not uninstalled). To undo the change, you will need to enable each extension and plugin listed in the Add-ons Manager. See this article if you need more help enabling your add-ons.
• Reset toolbars and controls: If you select this box and then click Make Changes and Restart then Firefox will start back up in its normal mode, except any toolbar customizations you have made will be lost, such as position of buttons and toolbars. If you later want to undo this change, you will need to add back those customizations. See Customize Firefox controls, buttons and toolbars for more help.
• Delete all bookmarks except for backups: If you select this box and then click Make Changes and Restart then Firefox will delete your current bookmarks and replace them with the default set. If you later want to undo the change, you will need to restore your bookmarks from backup. See Restore bookmarks from backup or move them to another computer for more help.
• Reset all user preferences to Firefox defaults: If you select this box and then click Make Changes and Restart then all Firefox options and preferences will be set back to the default settings, and any changes you made to them will be undone. This change will be hard to undo, since you may not remember all of the settings you have changed.
• Restore default search engines: If you select this box and then click Make Changes and Restart then any of the default search engines you deleted will be restored. This does not remove any added search engines. To undo this change, simply go to the Search Bar and remove the search engines you don't want.