Windows 10: Can´t turn on Windows 10 Defender! Please help.

Hello, i can´t turn on windows 10 defender real time protection and others.I just can´t move the bar to ON.In regedit i have DisableAntiSpyware value to 0.In gpedit.msc or Group Policy Editor i have "Turn off windows 10 defender" value to "Not Configured".The Language is CZECH.



:)

 

How to turn on Windows defender in Windows 10

Hello,

I realize the inconvenience you are experiencing with Windows 10. I will certainly help you.


Windows Defender is the default real-time (always on) protection program in Windows 8, 8.1 and 10.

If there are any third party security software installed, then Windows Defender will get disabled automatically.

I suggest you to follow the steps below and check if it help:

• 
  Open Settings by either clicking on the Settings icon on the Start menu or simultaneously pressing Windows and I keys.
  
• 
  Click on Update & Security.
  
• 
  Click on Windows Defender, and on the left right side, turn on.
  

Hope this helps in resolving the issue. If the issue persists, do get back to us. We will be happy to assist you.

Thank you.

 

WINDOWS DEFENDER is turned off

Hi Ahmed,

Since you're not able to turn on Windows Defender as well, we'd like to know if you have made any changes recently prior to this issue. In the meantime, you may follow the steps below on how to turn on Windows Defender manually:

• Type Windows Defender in the Search bar and press
  Enter.
  
• Go to Settings and make sure that the Turn on real-time protection recommended option is turned on.
  

Same thing with the other members who are having the same issue, we suggest that you check if the service was setup to
Automatic in the Services option. Please follow the steps that we've provided last
September 3, 2017.

Let us know how if you were able to turn it on properly by changing the Startup type to Automatic.

 

windows defender & security center services keep turning off


Are you running any other AV or did you have one running in the past? If you didn't use an uninstaller for the AV, then the remnants of it could be causing the problem. Normally any time you install an AV it disables Defender by default.

If you are getting any error codes please list those, that will be helpful in helping you.

As torre suggested, might be a good idea to do a reset or even a reinstall.

Reset Windows 10 - Windows 10 Forums

Windows 10 - Clean Install - Windows 10 Forums

There are also some suggestions listed here:

Unable to turn on Windows Defender in Windows 7 / 8 / 10