If you can’t open Firefox due to issues for which you want to start Firefox in Safe Mode, skip ahead to the Windows or Mac method.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser’s settings and add-ons.

Hold down ⇧ Shift. Click or double-click the Firefox app icon. Release ⇧ Shift when Firefox opens. Click Start in Safe Mode when prompted. Troubleshoot Firefox as needed.

If you installed Firefox in a different folder than the one that was recommended, you can try typing in start firefox -safe-mode instead.

If you receive an error or you’re not prompted to start Firefox in Safe Mode, try typing “C:\Program Files (x86)\Mozilla Firefox\firefox. exe” -safe-mode into Command Prompt and pressing ↵ Enter.

Hold down the ⌥ Option key. Click (or double-click) Firefox. Release the ⌥ Option key when Firefox opens. Click Start in Safe Mode when prompted. Troubleshoot Firefox as needed.