Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

My Firefox will not close and I have to reboot my computer and then re-install Firefox. What is wrong?


I haven't the foggiest what is wrong. I have uninstalled both Jave 7.15 and Firefox and re-installed them. When I click on the X to close Firefox it closes the window but when I try to open Firefox again it won't. I go to my control panel and try to uninstall Firefox and the Firefox pop up says close Firefox to continue. The only thing I can do is to reboot my computer to get Firefox to close. I don't know if there is a compatability problem with Java or Adobe or what?????

Can anyone help with this problem? jstjr1

Additional System Details


  • User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; MDDS)

More Information

  • Top 10 Contributor
  • Moderator
10762 solutions 96861 answers


Make sure that Firefox closes properly and that there isn't a hanging Firefox or plugin-container process left in the task manager.

Use "Firefox/File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") to close Firefox if you are currently doing that by clicking the close X on the title bar.