Since I installed Firefox I cannot acsess any settings in my computer.
When I try to access the control Panel I get a message that says " Windows cannot access the specified device,path, or file. You my not have the appropriate permission to access item " . I cannot even get into "My computer info"
Wšykne wótegrona (1)
Was Firefox running at the time? Firefox should not be doing anything to block Windows options.
Reboot the computer. Is the problem still there?
Perform a System File Check to fix corrupted system files
Win 7, 8, 10, Vista: https://support.microsoft.com/en-us/kb/929833 Win XP: https://answers.microsoft.com/en-us/windows/forum/all/windows-xp-scan-and-fix-disk-errors/6fe2827a-4be6-4bc1-8083-5139b5aa3a3d
Wiki - Windows 10 System File Check http://answers.microsoft.com/en-us/windows/wiki/windows_10-update/system-file-check-sfc-scan-and-repair-system-files/bc609315-da1f-4775-812c-695b60477a93
You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.
If you need more help;