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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[edited by: Gladys at 3:07 PM (GMT -7) on 5 Aug 2022]
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  • Quick update: The results from our testing look promising. The two machines that we are testing the patch on each experienced 4 BSODs in a 3 day period two weeks ago, before enabling the workaround for affected users.

    In the last 3 days those two machines produced zero regular BSODs (with the workaround disabled for them, of course).

    Unfortunately one machine still had a single BSOD, but after the reboot a pending windows update was installed, and current assumption with Sophos support agent is that background installation of the windows update might have removed the "manually deployed" patched driver - that is, the patched driver might not have been active at that point.

    Anyway even if the driver was active, 1 instead of 8 BSODs in a given time frame sounds like a substantial improvement.

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