Windows 10: How can i enable my windows defender virus and thread protection ?

About 6 months ago i tried downloading some files but windows defender kept deleting them after i disabled it. It kept turning on after a restart on my pc. But now i want it but i dont know the way of turning it back on. I turned it off permanently by following some random youtube tutorial. Now i see that i cant access it. What are the ways of turning windows defender back on? When i was turning it off permanently i went into registry editor or edit group policy but i tried it turning it on from those but failed

:)

 

Windows Defender: Virus & thread protection

There are multiple possible solutions to the issue you have described listed in my previous post...you'll need to do some reading and see what you think may be applicable. If you try one solution and that doesn't work I suggest you try another. Did you
try option two as suggested in https://www.tenforums.com/tutorials/5918-turn-off-windows-defender-windows-10-a.html?

Go to Security and Maintenance, look in 'Security' and see what program is listed under Virus Protection. Windows Defender will not be enabled and functioning properly if there is a program other than Windows Defender listed.

And you are sure there are no remnants of another AV program that need to be removed?

If you can't fix it then your best option may be to install a third party antivirus program.

Or you can obtain Premium Support (that means it may or may not be free) from https://support.microsoft.com/en-us/contactus/

Good luck...

 

Cannot turn on Windows Defender virus protection

I had the same sort of symptoms. In the Windows Security Center, under Virus and threat protection, it said "Your virus & threat protection is managed by your organization."





I note you mentioned the Registry Keys under HKLM/SOFTWARE/Microsoft/Windows Defender. Nice spotting, but it seems like there is another key that is causing the problem for some users.

Steps to a solution:

1. Press the Windows key and type "regedit"
   
2. On the regedit icon that appears, right-click and select Run as Administrator.
   
3. Navigate to the folder located at HKLM\SOFTWARE\Policies\Microsoft\Windows Defender (You can paste this into the address box at the top of the window, or navigate manually using the side directory structure)
   
4. In this folder, there are probably two keys. Right-click and Delete the DisableAntiSpyware key.
   
5. Exit regedit, and return to the Windows Defender settings screen (refresh it if necessary). Windows Defender should have the scan options available and working.
   

Solution adapted from here, with a much more detailed solution here.

 

windows defender virus protection

Go to Security and Maintenance, look in 'Security' and see what program is listed under Virus Protection. Windows Defender (WD) will not be enabled and functioning properly if there is a program other than Windows Defender listed.

For further information see the Answer of quietman7
- MVP in Redirecting

If the issue continues you may want to follow the steps in Problems
starting Windows Defender in Windows 8/8.1/10

For more detailed recommendations to help resolve various Windows Defender issues see the Answer of GreginMich in Redirecting

You might also want to review http://www.howtogeek.com/220232/how-to-use-the-built-in-windows-defender-antivirus-on-windows-10/ Good
article but ignore the ads!

If you can't get this problem resolved suggest you post back in this thread and provide additional information.

Alternatively - - -

You may prefer to install a third party antivirus program (which should disable Windows Defender).

There are a number of viable free and paid options available – take your pick.

Choosing an Anti-Virus Program



http://windows.microsoft.com/en-US/windows/antivirus-partners#AVtabs=win10

Regards…

http://blog.emsisoft.com/2015/01/27/top-10-ways-pups-sneak-onto-your-computer-and-how-to-avoid-them/