Though Mozilla Firefox is noted as one of the best web browsers, it may have a lot of technical errors or problems in offering. For example, the browser may close abruptly on your computer. This may happen rarely or frequently. If it happens quite frequently, you need to resolve it immediately otherwise web browsing experience would not be good for you. When you find that Mozilla Firefox is getting closed abruptly, you need to know about the errors carefully. The first thing is judging the error carefully. It could be installation failure. You need uninstall and then install Mozilla Firefox again. If that does not solve the problem, call customer support center.
For more info: http://www.firefoxcustomersupport.com/mozilla-firefox-customer-service.html