Everytime I try to open my Firefox browser , which is my default browser, it opens to Microsoft Bing? What can I do?

It can be just set as a home page, so you just need to pick something else — or it can be caused by a rogue extension or system malware that's resetting that for you constantly, so check which of these are more relevant to your situation: * [[How to set the home page]] * [[An extension changed my New Tab page or home page]] * [[Wrong home page opens when I start Firefox - How to fix]]

Firefox is a web browser while the Bing you are seeing may be as a Homepage or as a search engine. https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox