Windows 10: Reactivate Windows Defender

I have disabled windows defender from the regedit, is there some way to reactivate it without have to install again my OS?

:)

 

window defender

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      You will want to print these instructions for offline reference -
      

IMPORTANT => DON'T SKIP ANY STEP perform all Steps in one uninterrupted session - If a Step says to reboot
reboot.

Problems starting Windows Defender in Windows 8/8.1/10

Pləase let us know what fixes the problem or if the pяoblem remains.

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Windows Defender problem

Hi Ernst,

To troubleshoot this issue, we suggest that you check the Windows Defender service if it's running. If you are using a third party spyware/malware program, it may disable the Windows Defender service. To do this, please follow the steps below:

• Press Windows + R key.
• Type services.msc.
• Right-click Windows Defender service and click
  Start.

Let us know the result.

 

Windows update and windows defender issues

We suggest you to avoid installing any cleaner or anti-virus software that may interrupt the function of Windows Defender. Make sure that Windows Defender is always on. To do this follow these steps:

• On the Start menu, type Windows Defender and hit enter.
  
• Click Settings.
  
• Turn Real-time protection on.

We also recommend you to install the latest update for Windows Defender.

Should you have further questions, feel free to get back to us.