Windows 10: Re-enable Windows Defender Service

I'm not sure how it happened but in my attempt to disable windows defender I got it disabled but when I try to re-enable it it says I don't have permission to do that. I could not disable the services via services.msc so I used autoruns and was able to disable it from there. Later when I tried to re-enable it both the services screen and autoruns tell me "error changing item state. Access is denied". I can see the key for autoruns disable in the service entry for the windows defender registry I just can't delete the key. Is there a way to alter the key temporarily to allow the change and then put it back after its fixed. Thanks. Windows 10 1909.

:)

 

How reinstall windows defender

Hello LucianN1, my name is Irisdiel and I am an independent advisor.

I suggest you follow the instructions down below.

Step 1: Enable Windows defender from control panel

1. Press Windows + X, Click on control panel.

2. On right top corner click on View and then choose large items.

3. Now from the list click on Windows Defender and try to enable it.

If not try to enable it from services.

Step 2: Enable Window defender from services.msc.

1. Press Windows + R, to open run prompt.

2. Type services.msc and press enter to open services list.

3. Under services look from Windows defender service and start the service.

I also suggest you refer to the link down below.

URL:
https://answers.microsoft.com/en-us/protect/for...

Hope this helps!

Thank you and good luck,

Regards- .

 

Windows Defender

Hi Jacqueline,

Thank you for posting your query in Microsoft Community.

I understand your concern, and we in Community will try to help you in the best possible way we can.

Please follow the below steps and check:



Step 1: Enable Windows defender from control panel

• Press Windows + X, Click on control panel.
• On right top corner click on View and then choose large items.
• Now from the list click on Windows Defender and try to enable it.

If not try to enable it from services.

Step 2: Enable Windows defender from services.msc.

• Press Windows + R, to open run prompt.
• Type services.msc and press enter to open services list.
• Under services look from Windows defender service and start the service.

If you face any issue while troubleshooting, please provide the outcome, so that we can work on your issue.

Hope the information helps, if you have any further queries, feel free to post. We are here to assist you.

Thank you.

 

Cannot activate Windows Defender

On my laptop "Toshiba Satellite L455" I did upgradation to W-10 from W-7 (original).

There is no antivirus program on this PC.

I wanted Windows Defender to run. But it says that it is switched off.

Want to activate it.

On opening Windows defender, there is no option to activate it.

In step 2 of your suggestion, it says:

"Windows could not start the Windows Defender Network Inspection Service on local computer.

Error 1068: The dependency service or group failed to start"

Can you pl give a method to activate the defender?