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cant turn off mozilla

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I upgraded to Windows 10 and cannot turn off Mozilla and it freezes screen and I cant uninstall it since I cant turn it off.

I upgraded to Windows 10 and cannot turn off Mozilla and it freezes screen and I cant uninstall it since I cant turn it off.

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Alt plus Ctrl plus delete .it open task manager select processes .then yu can see processes running back ground .sselect Firefox and then click on end process tab

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Use "3-bar" menu button > Exit (Power button) (Windows: File > Exit; Mac: Firefox > Quit Firefox; Linux: File > Quit) to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.

In case you use "Clear history when Firefox closes" then try to disable this feature.

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