Windows Defender in Windows 8.1 Will Not Turn On

Anonymous

I recently updated Windows 8 to Windows 8.1. Windows Defender had been on in Windows 8 and even after the update to 8.1. I turned it off momentarily but have been unable to turn it back on. To my knowledge, I have no other anti-virus programs running. How can I turn it back on?

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Anonymous

2015-03-27T23:36:09+00:00

The windows defender on my PC could not be turned on. It was giving error 577. I uninstalled antivirus on my PC and presto I could turn on the defender. thus the other ntivirus was interfering with the working of the defender.
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Anonymous

2015-03-03T23:19:36+00:00

I wasn't replying to a post of yours.
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Anonymous

2015-03-03T22:03:31+00:00

Sorry, I have been commenting on this thread and as I am following it I am allowed to comment.
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Anonymous

2015-03-03T21:20:57+00:00

See...

    • HOW TO begin your own, new thread about your computer & problem

       http://answers.microsoft.com/en-us/page/faq#faqAskQuestion1

    • Suggestions for asking a question in help forums

       http://support.microsoft.com/kb/555375
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