Windows 10: Windows update error when defender guard activated.

HadrametSylla · Nov 17, 2022

I activated Microsoft defender guard on my Windows 11 Education system, Version 22H2, OS Build 22621.819. Then I installed the ubuntu 20.04.5 LTS environment terminal for wsl-2.When I rebooted, I found that my Ethernet IntelR Wireless-AC 9560 160MHz and Wifi IntelR Ethernet Connection 6 I219-V drivers stopped working and I had a blue screen error. And when I deactivated the defender guard feature, everything was working again. So I wonder if Defender guard is not compatible with Ubuntu terminal?

:)

Aditya_Roy · Nov 17, 2022

Windows Defender Application Guard settings

Hi,

Thank you for writing to Microsoft Community Forums.

We understand your concern as you have some queries on WDAG that you are implementing in your enterprise network.

We would like you to check these articles on WDAG, which will clarify the queries:

Windows Defender Application Guard overview

System requirements for Windows Defender Application Guard

Configure Windows Defender Application Guard policy
settings

Frequently asked questions - Windows Defender Application
Guard

If you have any further query on WDAG, I would suggest you to post your query in

TechNet Forums where you will find professionals with expertise on WDAG for Enterprise network and that would be the appropriate forum.

Regards,

Aditya Roy

Microsoft Community – Moderator

PrakashVarkhedkar · Nov 17, 2022

Cannot activate Windows Defender

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Hi,

Thank you for posting your query on Microsoft Community.

We understand your problem and will try to assist you with this issue.

Do you get any error message when you try to enable windows defender?

Have you installed any third party antivirus program?

You can enable the Windows defender either from control panel or from services.

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 this information is helpful. Please do let us know if you need further assistance with Windows, we’ll be glad to assist you.
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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?

Tenforo · Nov 17, 2022

Windows Defender Application Guard extensions for Chrome and Firefox

The hardware-based isolation technology on Windows 10 that allows Microsoft Edge to isolate browser-based attacks is now available as a browser extension for Google Chrome and Mozilla Firefox.

We introduced the container technology in 2017. Since then, we have been evolving the technology and engaging with customers to understand how hardware-based isolation can best help solve their security concerns. We know that many of our customers depend on multi-browser environments to allow enterprise apps to meet various compatibility requirements and enable productivity. And while modern browsers are continuously working to mitigate vulnerabilities, there are still exposures across these complex engines that can lead to irreversible and costly damages.

To provide customers with a comprehensive solution to isolate potential browser-based attacks, we have designed and developed Windows Defender Application Guard extensions, now generally available, to allow customers to integrate hardware-based isolation with Google Chrome and Mozilla Firefox.

How it works

The extensions for Google Chrome and Mozilla Firefox automatically redirect untrusted navigations to Windows Defender Application Guard for Microsoft Edge. The extension relies on a native application that we’ve built to support the communication between the browser and the device’s Application Guard settings.

When users navigate to a site, the extension checks the URL against a list of enterprise sites defined by enterprise administrators. If the site is determined to be untrusted, the user is redirected to an isolated Microsoft Edge session. In the isolated Microsoft Edge session, the user can freely navigate to any site that has not been explicitly defined as enterprise-trusted by their organization without any risk to the rest of system. With our upcoming dynamic switching capability, if the user tries to go to an enterprise site while in an isolated Microsoft Edge session, the user is taken back to the default browser.

To configure the Application Guard extension under managed mode, enterprise administrators can follow these recommended steps:

Ensure devices meet requirements.

Turn on Windows Defender Application Guard.

Define the network isolation settings to ensure a set of enterprise sites is in place.

Install the new Windows Defender Application Guard companion application from the Microsoft Store.

Install the extension for Google Chrome or Mozilla Firefox browsers provided by Microsoft.

Restart the device.

Intuitive user experience

We designed the user interface to be transparent to users about Windows Defender Application Guard being installed on their devices and what it does. We want to ensure that users are fully aware that their untrusted navigations will be isolated and why.

When users initially open Google Chrome or Mozilla Firefox after the extension is deployed and configured properly, they will see a Windows Defender Application Guard landing page.

If there are any problems with the configuration, users will get instructions for resolving any configuration errors.

Users can initiate an Application Guard session without entering a URL or clicking on a link by clicking the extension icon on the menu bar of the browser.

Commitment to keep enterprise users and data safe

Hardware-based isolation is one of the innovations that enhance platform security on Windows 10. It is a critical component of the attack surface reduction capabilities in Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP) and the broader unified security in Microsoft Threat Protection. With the new Application Guard extension for Google Chrome and Mozilla Firefox, customers can extend the security benefits of isolation in their environments and further reduce attack surface. Customers can confidently navigate the expansive internet with protection for enterprise and personal data.

The Windows Defender Application Guard extensions for Google Chrome and Mozilla Firefox are now available for Windows 10 Professional, Enterprise, and Education SKUs, version 1803 and later with latest updates.

Rona Song
Windows platform security team
Click to expand...

Source: https://www.microsoft.com/security/b...sed-isolation/

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