That reference doesn't specify ''exactly'' what will be deleted, so instead of risking losing all your settings, I suggest checking your home page setting to make sure it is what you want it to be. [[How to set the home page]] Also, please check your extensions. You can view, disable, and often remove extensions on the Add-ons page. Either: * Ctrl+Shift+a (Mac: Command+Shift+a) * "3-bar" menu button (or Tools menu) > Add-ons * type or paste '''about:addons''' in the address bar and press Enter/Return In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove). Any improvement?

Thank you for your help.