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Spark Zhang's avatar
Spark Zhang
Brass Contributor
Jun 05, 2023

Web content filtering and indicator aren't working on third party browser

Hi, we have just noticed that web content filtering and customized indicators are not working on third party browsers after upgraded defender for endpoint to 4.18.23050.3, the issue has happened to both Win10 and Win11 machines.

 

Has anyone else got the same issue?

86 Replies

  • as per my post I have seen this has stopped working since 31st May as described here.
    content filtering policy applied (and works on the same systems via edge smartscreen), network protection enabled in block mode, all prereqs in place and it worked until 31st May.

    This is a big concern !
    • Groove200's avatar
      Groove200
      Brass Contributor
      Anyone had a response from MS yet? We are seeing the same. Just logged a ticket
  • Spark Zhang's avatar
    Spark Zhang
    Brass Contributor
    Hi Louis, Yes, I'm sure that all settings are correct. (Enabled content filtering policy and network protection). The feature was working fine before upgrading to 4.18.23050.3, and once we have rolled back to the previous version (by using mpcmdrun /revertplatform), the WCF and indicator will be working again. A Microsoft support guy has re-produced and confirmed that issue from his testing environment as well. I'm looking for a hotfix or mitigation to this issue but I haven't found it. All our endpoints have been impacted now even we have set the defender upgrade channel to broad channel to them.
  • Hi Spark,

    Do you have network protection enabled in the configuration of MDE?

    In order for it to function it requires:
    - An active content filtering policy
    - it works on Edge, Chrome, FireFox, Brave or Opera if the network protection feature is enabled in block mode with customer network indicators turned on in the portal.



    • Spark Zhang's avatar
      Spark Zhang
      Brass Contributor
      Yes, we have. I'm sure that all settings are correctly enabled.

      The web content filtering and indicator feature worked fine before upgrading to v4.18.23050.3.

      I've submitted a ticket to Microsoft support and the Support guy has re-produced the issue in his testing environment, but he haven't found a solution yet. He also doesn't suggest to do a downgrade to the Defender even the after downgrade the web content filtering would be working again.

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