Application Guard in Edge with Web Content Filtering

Rahul Jindal [MVP] 9,391 Reputation points MVP
2021-09-08T16:01:55.24+00:00

I enabled Application guard for Edge and configured the network boundaries using EP policies in Intune. The feature works flawlessly and all un-trusted URLs open in Application guard sessions as intended.

However, URLs that should block via Web content Filtering categories in Defender, are also being allowed to open in Application Guard session. If I disable Application guard for edge, the URLs get blocked again.

It appears that the all the Web content filtering rules are being bypassed and everything is being whitelisted because of Application guard for Edge.

Is there a way around?

Microsoft Edge
Microsoft Edge
A Microsoft cross-platform web browser that provides privacy, learning, and accessibility tools.
2,204 questions
Windows 10 Security
Windows 10 Security
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Security: The precautions taken to guard against crime, attack, sabotage, espionage, or another threat.
2,807 questions
Microsoft Intune
Microsoft Intune
A Microsoft cloud-based management solution that offers mobile device management, mobile application management, and PC management capabilities.
4,571 questions
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Accepted answer
  1. Rahul Jindal [MVP] 9,391 Reputation points MVP
    2021-09-09T06:09:15.827+00:00

    Thanks for the response. Using a web proxy is not an option. In fact, Web content filtering is being implemented to replace an existing web proxy solution. I will explore the idea of raising a case. Cheers.


2 additional answers

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  1. Crystal-MSFT 44,851 Reputation points Microsoft Vendor
    2021-09-09T02:46:54.727+00:00

    @Rahul Jindal [MVP] , Based on my research, I find this seems to be a design behavior. There is a workaround provided in the following link. We can see if it can help on our situation:
    https://techcommunity.microsoft.com/t5/microsoft-defender-for-endpoint/application-guard-in-edge-and-web-filtering/m-p/1513041

    However, if we want to know more. we can contact Microsoft Defender for Endpoint support to get more help:
    https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/contact-support?view=o365-worldwide

    Thanks for the understanding and have a nice day!


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  2. Limitless Technology 39,461 Reputation points
    2021-09-10T08:17:30.273+00:00

    Hi Rahul J,

    Thank you for your question.

    As the problem you are facing is Microsoft Edge, I recommend that you create a question thread in the Microsoft Edge team specific forum using the link below:

    https://answers.microsoft.com/en-us/microsoftedge/forum?sort=LastReplyDate&dir=Desc&tab=All&status=all&mod=&modAge=&advFil=&postedAfter=&postedBefore=&threadType=All&isFilterExpanded=false&page=1

    By accessing the link, you click on the top option called "Ask a question and describe the entire problem, including photos, to facilitate understanding of the problem.

    If the answer was helpful, please don't forget to vote up or accept as an answer, thanks.