Current position:  Home > Default > I want to reset Firefox, and the message is that something is preventing the reset. I have closed all open windows and I still get the "Oops" message,

I want to reset Firefox, and the message is that something is preventing the reset. I have closed all open windows and I still get the "Oops" message,

Time:October 11
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I have uninstalled and reinstalled Firefox because I was receiving unwanted adware and was being directed to untrusted sites. Now I want to reset Firefox because I want to change the home page and toolbars, and something is preventing the reset. I have closed all open windows repeatedly, but the problem continues.
=====Moved from Firefox OS product to Firefox for Desktop product category by Moderator. -feer56=====
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Check the programs that are on your computer
'''Windows:''' Start > Control Panel > Uninstall Programs.
'''Mac:''' Open the "Applications" folder
'''Linux:'''
* [http://www.freesoftwaremagazine.com/articles/see_all_your_installed_applications_ubuntu_unity Ubuntu Unity]''' {web link}
* Xfce: Applications Menu category sections
* options depends on the package manager and the desktop environment
Go thru the list. If you find something that you don't
know what it is, use a web search.
'''''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Troubleshoot Firefox Issues Caused By Malware]''''' {web link}