windows defender inactivate

Tom0ne · Jul 31, 2021

hello,

I have a troubleshot with windows defender,
I can't activate it because the checkbox is grey.
The defender service in not in the service.msc anymore.

then i can't activate defender on windows 10.

The error, when i try to activate defender, is "the firewall windows defender can't modify some parameters, error code Ox80070422.

also, it is not possible to create a restauration point.

Please you can see the attached screenshot .

Thanks a lot for helping me,
Gilbert

DR M · Jul 31, 2021

Hi, Gilbert.

With this tool we can check if something is wrong with the services:

Please download Farbar Service Scanner and save it on your Desktop.
Right click on the tool icon and run it as administrator.
Make sure all the options are checked.
Click on the Scan button.
It will create a log (FSS.txt) on your Desktop.
Copy and paste the log's content to your next reply.

Digerati · Jul 31, 2021

Do you have another antimalware program installed? If so that may be your problem. Microsoft Defender (formally Windows Defender) is designed to disable itself automatically when a 3rd party anti-malware solution is installed. This is to avoid conflicts and the wasting of system resources. And that is not necessarily a bad thing.

Some 3rd party programs allow you to tell that program not to register itself in the Windows Security Center. Malwarebytes is such a program. If you are running a 3rd party solution, and you want to run Microsoft Defender too, check your programs options menu to see if provides such an option.

britechguy · Jul 31, 2021

If there is not a third-party antivirus or security suite installed, which would cause such problems as @Digerati has noted, then I would suggest my standard advice:

1. Using SFC (System File Checker) and DISM (Deployment Imaging Servicing and Management) to Repair Windows 8 & 10
then if that doesn't fix the issue:
2. Doing a Windows 10 Repair Install or Feature Update Using the Windows 10 ISO file

This presumes no third-party antivirus/security suite and/or that if there was one, and it's been removed, that the removal was complete and successful. If you have recently removed any third-party suite, I'd suggest fetching their "force removal" uninstall tool, and they've all got them, used when the conventional uninstaller has failed in some way. There is no harm in using one even if the uninstall appears to have been successful, in that there will be nothing it detects to force uninstall.

Tom0ne · Aug 1, 2021

Hello
I have Bitdefender antivirus free edition and Malwarebytes free but the problem existed before them

FreeBooter · Aug 1, 2021

If the real-time protection is enabled for third-party antivirus, Windows Defender will disable it self.

DR M · Aug 1, 2021

The defender service in not in the service.msc anymore.

This has nothing to do with the third party antivirus you have. It should be there, but not running.

That's why I told you to run the FSS tool, so we can check if there is something wrong with the services.

I would first check that.

Tom0ne · Aug 1, 2021

DR M · Aug 1, 2021

It seems that wuauserv and WinDefend services are missing.

Let's restore them:

1. Restore missing services

Download Microsoft_Defender_Antivirus_Service.reg and save it to your Desktop.
Double-click on the file, allow the information to be merged (Yes) and restart the computer.
Repeat the same two steps above for Windows_Update.reg.

2. Run FSS again

Right click on the tool icon and run it as administrator, as you did before.
Make sure all the options are checked.
Click on the Scan button.
It will create a log (FSS.txt) on your Desktop.
Copy and paste the log's content to your next reply.

Tom0ne · Aug 1, 2021

New error !

DR M · Aug 1, 2021

Hi, TomOne.

Let's try to do the process in Safe mode:

1. Restart with Safe mode

Press the Windows icon on the keyboard together with the letter I, to get into the Settings.
Choose Update and Security.
From the menu at the left, choose Recovery.
Under the title Advanced startup at the right, choose Restart now.
From the window that will appear choose Troubleshoot and then Advanced options.
Choose Startup Settings and then Restart.
Press number 5, for choosing Safe mode with networking.
You will know that you are in Safe mode, if the background is black and Safe mode is written at the four corners of the screen.

2. Repeat the steps in my previous post and let me know about the result.

Tom0ne · Aug 2, 2021

Hello,
I have done what you say in safe mode.
The 2 reg were executed correctly.
But defender is always blocked.
Thanks for uour help and excuse my bad english.

DR M · Aug 2, 2021

Hi, Gilbert.

Your English is just fine. I'm not English native speaker either.

As Digerati said above,

Microsoft Defender (formally Windows Defender) is designed to disable itself automatically when a 3rd party anti-malware solution is installed. This is to avoid conflicts and the wasting of system resources. And that is not necessarily a bad thing.

Please run FSS again as instructed here (Step 2) to ensure that services have been correctly registered.

After that,

Go to Settings (Windows icon on the keyboard + i)
Select Privacy & Security
From the left pane, Windows Security
Open Windows Security
Click on Virus & Threat Protection
Please take a screenshot of what you see

Tom0ne · Aug 2, 2021

hello,
Ihave forgotten that;
thanks

Tom0ne · Aug 2, 2021

And also that

DR M · Aug 2, 2021

I would also like to see here:

Go to Settings (Windows icon on the keyboard + i)
Select Privacy & Security
From the left pane, Windows Security
Open Windows Security
Click on Virus & Threat Protection
Please take a screenshot of what you see

Tom0ne · Aug 2, 2021

Hello
When i click on , nothing.

DR M · Aug 2, 2021

Click on the Virus & Threat Protection (I don't speak French to write it in French

)and take for me another screenshot please.

Tom0ne · Aug 2, 2021

hello,
i do what you want.
Nothing.
No new window opens.More exactly a window opens and close immediatly.

Tom0ne · Aug 2, 2021

And the screen shot

windows defender inactivate

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