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Multiple computers getting netio.sys BSOD after 2022.2.1.9 update

We're having an outbreak of DRIVER_IRQL_NOT_LESS_OR_EQUAL BSOD's in driver NETIO.SYS. Netio.sys caused BSOD's are usually tied to network drivers but that doesn't make sense because this started happening all of a sudden on multiple computers. These are fully patched/updated Windows 10 Pro computers. The common thing we're seeing is Sophos was updated to version 2022.2.1.9 around 7/20/22 on all of them. Any insight from Sophos on if the blue screen of death crashes are being caused by the latest version of Sophos? 



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  • We have had the same problem since the rollout of Core Agent 2022.2.1.9 last Tuesday. We use Dell notebooks (Latitude 7320, 7310 and 7300) and also the Cisco Anyconnect Client 4.10.04071. The BSODs occur regardless of the VPN status.
    We have not yet been able to observe a BSOD without the Cisco Anyconnect Client installed.

    This morning we implemented the workaround ("Realtime Scanning - Internet" and "Web Control" deactivated).

    We have also created a case at Sophos, and minidumps have been sent to Sophos.

  • I think they need the full dumps - you should have them in c:\windows by default configuration

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