At the top right corner of the page, you should see a button that says 'Refresh Firefox' ('Reset Firefox' in older Firefox versions).

If you're unable to access the Help menu, type about:support in your address bar to bring up the Troubleshooting Information page.

A new tab containing your troubleshooting information should open.

Click the menu button, click help and select Troubleshooting Information.

Open the Troubleshooting Information page using one of these methods:.

See the Refresh Firefox - reset add-ons and settings article for more information.

Note: When you use this feature, you will lose any extensions, toolbar customizations, and some preferences. The Refresh feature (called 'Reset' in older Firefox versions) can fix many issues by restoring Firefox to its factory default state while saving your bookmarks, history, passwords, cookies, and other essential information. Read this answer in context 👍 2 All Replies (3) You can also do a check for a rootkit infection with TDSSKiller. Make sure that you update each program to get the latest version of their databases before doing a scan. Please scan with all programs because each program detects different malware. Do a malware check with several malware scanning programs on the Windows computer.

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