Computer crashes running Windows Virtual PC when Avast IS is installed

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Computer crashes running Windows Virtual PC when Avast IS is installed, Bug check Codes's 0x0000003b, 0x00000124, 0x0000001e.

Any help would be much appreciated.

Regards

[Eddy]

Disable hardware virtualization and see if that solves things.

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I have the exact same problem.  Why has Avast not been fixed?  This is clearly an Avast problem.  Turning off hardware virtualization is not a good solution - it will affect the performance of the VM.

I tried disabling self protection, root-kit features, etc. in "troubleshooting" and even shutting down the Avast service, but as long as Avast is installed, instant BSOD.

Unacceptable.

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Note that if I switch to "passive mode," then the crash goes away, but then of course I don't have any realtime protection.

If passive mode is NOT selected, I'll even crash the host if in a VMware guest if I try to run Virtual PC there, unless I uncheck the virtual option in "troubleshooting." However, even with it unchecked, the VM inside Virtual PC still crashes sporadically and the apps in it experience unexpected crashes.

I suspect this is aswVmm.sys which is incompatible with the vmm.sys used by Virtual PC.  I know you can't install VPC in Windows 8, because that same file is incompatible, so I'm guessing Avast simply dropped Windows 7 support with respect to usage in that DLL.  Not cool.

Avast 17.9 didn't cause these problems, at least with Virtual PC inside a VMware virtual machine, which is how you can run it on Windows 8 (in a Windows 7 VMware guest).

[kwiq]

Hi Biffster,
can you take a look into windows directory for MEMORY.DMP and upload it to avast ftp as service25_memory_dmp.zip ?
System memory dumps are usually located at C:\Windows\MEMORY.DMP.
It will help us to resolve the crash.
Thank you !

[Asyn]

Hi service25...

Hi kwiq, check the date.

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Different guy, same problem.  I'll see if I can upload the file as you requested.