Windows defender (wins8.1) automatically turns off

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Sunday August 23, 2015
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December 16, 2015
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Posts
14
Registration date
Sunday August 23, 2015
Status
Member
Last seen
December 16, 2015
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Hello,I really really need help right now. My pc has been unprotected for days. Mcafee is expired. I'm having issues installing avast premier which i sent onto a flash drive from a friend's computer and its doesn't move beyond the part where the windows prompt come up whenever i try to install it. So im basically down to windows defender, and it automatically is off and won't come on. Its saying the app has been turned off and isn't monitoring my computer. I need help installing the avast premier and turning windows defender back on for good. Thanks.

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Number one you can't copy Avast from another computer. It's better you use the free version that you can download.
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Sunday August 23, 2015
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December 16, 2015

okay. point taken. How do i turn windows defender back on. Even if its expired i have to get it on to make an update