Just to distinguish two different issues: * If the problem is an unwanted startup page or unwanted page when you click your Home button, please see this article: ** [[How to set the home page]] ** If that is not honored, see below regarding extensions. * If the problem is when you use Firefox's address bar or search bar to submit a search to your default search engine, you get Yahoo instead of Bing: ** [[Change your default search settings in Firefox]] ** If that is not honored, see below regarding extensions. One possible reasons settings might be ignored is an extension overriding them. You can view, disable, and often remove unwanted or unknown 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 that Firefox installs on its own are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious -- in particular, anything with the word ''search'' in the name? If in doubt, disable. Sometimes a link will appear above a disabled extension to restart Firefox before the change takes effect. You can complete your work on the tab and click one of the links as the last step. Any improvement? (Feel free to "name and shame" bad add-ons!)

Thanks for the help. I removed the extension.