Windows 10: Remove/replace Defender Application Guard => wrong version folder

Whilst chasing a problem I uninstalled Avast and found Defender definition updates no longer succeeded.
I then found Defender was not running.

I decided to try unticking Defender Application Guard, restart, tick the same, restart.

This did not succeed- Msmpeng.exe still not running.

What I found:



Note the bottom value points to a version-dependent folder- at that time 4.18.1809.2-0

But the folder present was
C:\ProgramData\Microsoft\Windows Defender\Platform\4.18.1812.3-0

I could not amend the registry, so I created a folder matching the registry entry.

Defender ran and the definition update succeeded.

Is this a bug, or something else? Opinions welcome!

:)

 

Application Guard Container Service High CPU

Hi
aka72twn,

The background process "Windows Defender Application Guard" is normal and it's very important to
Microsoft Edge.

It's not only for Windows 10 Enterprise, but rather applies in
Windows 10 Pro build 1803. When you browse a website, this process will highly consume CPU usage to activate a fundamental security that prevents any attacks while you are up in the Internet.

For more information about how it works, visit the links below:

• Windows Defender Application Guard
• Introducing Windows Defender Application Guard for Microsoft Edge

If you have additional questions or concerns, please let me know by replying to this thread. This way, I'll get notified and respond back to you as soon as I can.

 

Turn On or Off Windows Defender Application Guard in Windows 10


Making Microsoft Edge the most secure browser with Windows Defender Application Guard Windows Security blog

 

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