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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: avastmobile2 on February 20, 2017, 01:07:40 PM

Title: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: avastmobile2 on February 20, 2017, 01:07:40 PM

I recently uinstalled Avast Free from my PC since it was causing my NIC to reset itself every few minutes. It took me a while to figure out it was Avast that was causing it because I never experienced any problems with Avast before. I then noticed there was a new version of Avast Free so I installed that. I did not experience any problems with my network so I was happy again. But today I started Virtual PC 2007 and whenever I tried to start a Virtual Machine, Win7 would hang and my only option was to reboot my PC. Again it took me a while to figure out what was causing this, but as it tuns out, it was Avast (again). If I uninstall Avast, VPX 2007 runs perfectly. Installing Avast and VPC 2007 hangs whenever I try to start a Virtual Machine.

So what could be wrong? Any tips getting Avast and VPC 2007 working together?

Thanks in advance.

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: Eddy on February 20, 2017, 01:10:11 PM

Disable hardware VM and see if that solves it.

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: avastmobile2 on February 20, 2017, 02:38:48 PM

Thank you for your reply! Had tried that already. Didn't make any difference.

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: Eddy on February 20, 2017, 02:40:15 PM

Also tried with the the behavior shield disabled ?
Also tried with hardware acceleration disabled ?

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: avastmobile2 on February 21, 2017, 08:16:51 PM

Quote from: Eddy on February 20, 2017, 02:40:15 PM

Also tried with the the behavior shield disabled ?

Yes (even disabled all shields).

Quote

Also tried with hardware acceleration disabled ?

Yes.

Both made no difference.

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: avastmobile2 on February 26, 2017, 03:30:16 PM

Anyone any other ideas?

Title: Re: With Avast installed, Win7 64bit crashes when starting Virtual PC in VPC 2007
Post by: avastmobile2 on February 27, 2017, 11:10:01 PM

Quote from: Eddy on February 20, 2017, 02:40:15 PM

Also tried with hardware acceleration disabled ?

I thought you meant disable hardware acceleration in VirtualPC (which made no difference). I was unaware there was a "Hardware Assisted Virtualization" option in Avast. I disabled that and now I can start my Virtual Machines just fine!

Is this related to this (https://forum.avast.com/index.php?topic=162445.0)?