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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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  • Just as an update from our end:

    In the meantime most of my users seem to be upgraded, including my own machine. The previous mitigation workarounds (Sophos groups and policies) have been removed.

    I have one user that has hit severe issues and lost network connectivity on his device, he ended up completely removing Sophos and will now try to reinstall from scratch. He was one of the users with the test driver active, so this comes a bit as a surprise, but I hope it will resolve after a clean reinstall.

    Besides that I have no reports of BSODs or other problems with the update so far. I am positive we can close this whole sad story soon.

  • I suggest proceeding in opening a support case. You can send your case number(s) to me via private message, and I will follow up with our team to expedite the process for those affected.

  • After running the updated version for close to a week now, we can confirm that our issue has been resolved:

    • The connectivity issue of the user mentioned in the previous post resolved after a full, clean reinstall
    • We have not seen ANY BSOD since
    • Even though my users have been sensibiIized, I have no reports of any other adverse effects.

    I will thus close our pending support case now.

    Thanks to everybody in here that chimed in, supported and worked on resolving this.

  • How do we find out when the update will be rolled out to us?

  • Hello, same question, is there any link to download the  2022.3 version please?

  • Hi  ,

    Thank you for reaching out to the Community. If you need more details on when the update will be rolled out to your devices, you'll need to reach out to your Account Manager. If you don't know who your Account Manager is, please send me a PM so I can share more information.

    Thank you.