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Turning on Web Protection destroys PC's

Scott2020

Hello.  Yesterday I installed Sophos 9.5 and created a new av and hips policy for a test group.  As part of the group I turned on the new features, but under "web protection" I had set "block access to malicious websites" left OFF.  I decided to try this out, so I turned it ON and pushed out to my test group.  Seconds after the update, I had 3 machines crash with svchost.exe errors, and an NTAUTHORITY process with a 60 second countdown trying to shut the machine down.

We restarted these machines and now we can't log into them.  There are several svchost.exe errors and then random critical errors preventing us from doing anything on the machines.

On one machine I was able to boot with last known good configuration and recovered it.

These are Windows XP SP3 machines with the latest Windows updates.  No firewall or other AV turned on.

Anyone else have this problem?

:3825


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    Hi,

    Glad to hear the information was helpful to recover your PCs. Again really sorry to cause you that pain, we tried very hard to learn as much about compatibility as we could before release. We are actively working on solutions to improve compatiblity with the APC software as well as other third-party LSPs in general.

    Re: the NVIDIA incompatibility, the net results are quite similar (machines unable to reach the Windows login prompt successfully). It is specifically with a DLL named "nvlsp.dll" provided by NVIDIA's App Filter product. We learned of the incompatiblity from a Sophos employee who had a similar experience with their home machine.

    We purchased an Acer Atom-based system with the NVIDIA Ion chipset for our compatibility testing, and we were able to see where the interactions went wrong and implemented a fix, to be released in 9.5.2. I suspect other manufacturers are also shipping products with the NVIDIA Ion chipset, but we didn't make an exhaustive search.

    Bob Cook

    Development Manager, Sophos

    :4357

    ---

    Bob Cook (bob.cook@sophos.com) Director, Software Development

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  • 0

    Hi,

    Glad to hear the information was helpful to recover your PCs. Again really sorry to cause you that pain, we tried very hard to learn as much about compatibility as we could before release. We are actively working on solutions to improve compatiblity with the APC software as well as other third-party LSPs in general.

    Re: the NVIDIA incompatibility, the net results are quite similar (machines unable to reach the Windows login prompt successfully). It is specifically with a DLL named "nvlsp.dll" provided by NVIDIA's App Filter product. We learned of the incompatiblity from a Sophos employee who had a similar experience with their home machine.

    We purchased an Acer Atom-based system with the NVIDIA Ion chipset for our compatibility testing, and we were able to see where the interactions went wrong and implemented a fix, to be released in 9.5.2. I suspect other manufacturers are also shipping products with the NVIDIA Ion chipset, but we didn't make an exhaustive search.

    Bob Cook

    Development Manager, Sophos

    :4357

    ---

    Bob Cook (bob.cook@sophos.com) Director, Software Development

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