Hello, Try restore your home page: *[https://support.mozilla.org/kb/How%20to%20set%20the%20home%20page How to set the home page] Other way, go to '''about:config''', search for '''browser.startup.homepage'''change its value to: '''about:home''' - default page<br> '''about:blank''' - a blank page<br> '''url''' - a page that you want You also can check if this happens in Safe Mode: *[https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode Firefox in safe mode] Case not: *[https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems] Try create a new profile: *[https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles Create a new profile] Also: *[https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware Problems caused by malwares] *[https://addons.mozilla.org/firefox/addon/searchreset Reset Search] *[http://kb.mozillazine.org/Preferences_not_saved] *[https://support.mozilla.org/kb/how-to-fix-preferences-wont-save Preferences won’t save]

You can check if you have a user.js file in the profile folder to initialize prefs each time Firefox starts. You can use this button to go to the Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) The user.js file is only present if you or other software has created this file and normally it wouldn't be there. You can check its content with a plain text editor (right-click: Open with) if you didn't create this file yourself. The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.