Windows 10: Today's CU KB4487044 Disables Windows Defender Offline

Sure am having issues with these last few CU's. I keep a base Retail vm updated with CU dl from MS Update Catalog as this vm is kept offline for testing Insider builds from offline state, checking the sign-in of these builds.


After installing KB4487044, it disabled Windows Defender leaving it with the Red X, and not possible to scan. This was never an issue prior with any CU installed on Retail 17763. Putting it back online, updating and back working.


Last month, KB4476976 was not compatible with Norton Security, totally disabled Edge. Could not use the browser till I removed Norton. Later on in the week, will try Norton to see if the issue still persists with the latest CU.

:)

 

Windows Defender Offline for Windows 10

Tried this suggestion and it did not work. Tried to boot from USB with Windows Defender Offline transferred from a safe computer. Would not boot from USB. Message "Secure Boot Violation, Invalid Signature Detected, Check secure boot policy in Setup"
Any suggestions on next steps for a Windows 10 compatible version of Windows Defender Offline?

 

Windows defender offline disables mouse

Thanks for clarifying things out. If you want to ensure that Windows Defender runs a scan, we suggest that you try these steps:

• Press Windows + X, then select Command Prompt (Admin) from the list.
• Type the following commands and press Enter after each:
  
  Dism /Online / Clenup-Image /CheckHealth
  
  Dism /Online /Cleanup-Image /ScanHealth
  
  Dism /Online /Cleanup-Image /RestoreHealth
• System will run integrity checks, once process is done, we suggest that you restart you PC to ensure that changes will apply

Keep us posted.

 

How to disable windows defender for long time?

Hi Andrew,

If I understand you correctly you are willing to disable Windows Defender from your system. I would like to know few more things to understand the issue in a better way.

• Why are you trying to disable Windows Defender? Are you planning to install any third party security software?
• From where you have followed the steps to disable Windows defender using registry?
• Are you logged in as Administrator?

The steps which you have mentioned to disable Windows Defender using gpedit.msc is correct. If you are unable to disable it then you may do that by stopping the service responsible for Windows Defender. Here are steps which you may follow to perform the
same task.

• Press Windows key + R to open run box.
• Type services.msc and hit enter.
• There should be 2 services: Windows Defender Service
  and Windows Defender Network14.
• Right click on each and press stop.

If you will stop the service responsible for Windows Defender then it will not run till it is stopped. Do get back to us with all the information required and result of proposed suggestion. We will be happy to assist you further.

Regards,