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Daithi2115's avatar
Daithi2115
Copper Contributor
Mar 20, 2024

Web content filtering in Defender not working outside of Edge

Trying to evaluate Cloud App and blocking Access to Email & Personal Storage 

While the likes of mail.yahoo and gmail is being blocked within Edge I'm able to bypass it with Chrome. I've Network Protection set to Enable (block Mode) within Intune. 

Am I missing some step that Chrome / Firefox needs ? 

4 Replies

  • DylanInfosec's avatar
    DylanInfosec
    Iron Contributor
    Hi,
    had a similar issue way early on in our deployment back when GPO was winning over Intune and found that there was a policy hiding. Could be that or someone else created a conflicting AV Policy or Config Profile.

    I would quickly confirm Network Protection is actually landing properly on the endpoint with a quick:
    Get-MpPreference | fl "EnableNetworkProtection"
    0 == Off
    1 == On

    - Dylan
      • UpaliWijekoon's avatar
        UpaliWijekoon
        Copper Contributor
        Daithi2115
        Please refer Microsoft Defender Application Guard Extension web browser add-on available for Chrome and Firefox.
        https://learn.microsoft.com/en-us/windows/security/application-security/application-isolation/microsoft-defender-application-guard/md-app-guard-browser-extension

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