Windows Defender in Windows 8.1 Will Not Turn On

Anonymous
2013-11-24T01:31:23+00:00

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?

Windows for home | Previous Windows versions | Security and privacy

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

165 answers

Sort by: Newest
Most helpful Newest Oldest
  1. Anonymous
    2015-04-11T06:47:10+00:00

    In order to download Microsoft Defender it was necessary for me to go to the McAfee website & download the McAfee removal tool. It worked like a charm. As long as McAfee is set up as your security software, it won't let you use another security software..

    Was this answer helpful?

    0 comments
  2. Anonymous
    2015-04-10T01:09:01+00:00

    I have basically the same problem, methods 1 & 2 did not work , I keep getting" Error code Ox80073afc".

          I'm hoping for a maintenance download soon  :I

    Was this answer helpful?

    0 comments
  3. Anonymous
    2015-04-10T00:50:39+00:00

    Me also ...  hoping for a maintenance download soon.

    Was this answer helpful?

    0 comments
  4. Anonymous
    2015-04-09T22:50:47+00:00

    need someone in the know to respond. thx.

    Was this answer helpful?

    0 comments
  5. Deleted

    This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

    Comments have been turned off. Learn more