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Websites stop loading in all browsers

Stuart Bate

We rolled out Sophos Advanced Endpoint with Intercept X recently (replacing Kaspersky) and we've encountered an issue where a few users suddenly lose access to any website (external and internal) in an web browser. All other network activity is fine, Outlook and Teams stay connected and there's no issue with network shares.

It is exactly the same issue as described in a previous thread: https://community.sophos.com/intercept-x-endpoint/f/discussions/131226/users-losing-internet-connectivity-and-often-warned-sophos-ips-stopped

The only way to fix it is by disabling tamper protection and then disabling the Real Time Scanning - Internet. Websites then load and continue to work even after turning the setting back on.

The reply in the thread above mentioned installing a hotix (https://support.sophos.com/support/s/article/KB-000038477?language=en_US),but the thread poster never came back to say whether it had worked or not.

I have a case open (05333081) and am being asked for logs (already send SDU logs from when the issue has occured) and Wireshark captures which I can only do when a uer encounters the issue and if I can take over their laptop for sufficient time to do so.

Is this a known issue affecting others and does the hotfix make any difference?



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  • 0

    Hi Stuart,

    Thanks for reaching out to the Sophos Community Forum. 

    This issue appears to be a bug that has been resolved in the upcoming Core Agent 2022.1.1.3 release. This will begin going out to customers as of the 21st of June, though if you wish to test it sooner, I recommend working with our support team to ask that you be moved into an earlier release group. 

    Kushal Lakhan
    Team Lead, Global Community Support
    Connect with Sophos Support, get alerted, and be informed.
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  • 0 in reply to Qoosh

    Hi Qoosh,

    That sounds like very good news, I'll ask the support agent dealing with it to ensure we get the update as soon as possible. Howerver, it would have been good if he'd had that information to pass on to me in the support case.

    For information, our current version details are:

    Core Agent: 2.20.13

    Intercept X: 2021.3.1.12

    Endpoint Protection: 10.8.11.4

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  • 0 in reply to Qoosh

    Hi Qoosh,

    That sounds like very good news, I'll ask the support agent dealing with it to ensure we get the update as soon as possible. Howerver, it would have been good if he'd had that information to pass on to me in the support case.

    For information, our current version details are:

    Core Agent: 2.20.13

    Intercept X: 2021.3.1.12

    Endpoint Protection: 10.8.11.4

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