Hi Nicola, the browser you posted with reported itself to be Firefox. Where is Bing showing up in Firefox? For example: (1) Bing has taken over as the home page in new windows, or default page in new tabs You can select a different home page: [[How to set the home page]]. If Firefox isn't honoring the setting, an add-on might be overriding the setting. An add-on also can change the new tab page. I'll mention how to clean up add-ons below the line. (2) Bing has taken over for Google (or whatever search engine you selected) when you submit a search in the Firefox address bar You can select a different default search engine: [[Change your default search settings in Firefox]] If Firefox isn't honoring the setting, an add-on might be overriding the setting. (3) Somewhere else? ---- Open 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. On the right side, find the "Manage Your Extensions" heading. ''If there is at least one extension before the next heading -- "Recommended Extensions" -- please continue:'' Then cast a critical eye over the list below that heading. 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 that mentions search, or privacy, or looks suspicious, or that you just do not remember installing or why? If in doubt, disable (or remove). For your privacy and security, don't let mystery programs linger here. Any improvement? '''If your Add-ons page is blank or is blocked, you can restart Firefox in its Troubleshoot Mode to do the above review:''' In that mode, Firefox temporarily deactivates extensions so they can't interfere. ''If Firefox is running:'' You can restart Firefox in Troubleshoot Mode using either: * "3-bar" menu button > Help > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled) * (menu bar) Help menu > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled) and OK the restart. A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button). Don't use Refresh! ''If Firefox is not running:'' Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button). Don't use Refresh! Now you should be able to manage your add-ons without interference. Any improvement?