Hello - I was working on one of my computers and when looking in the device manager notices several network adapter entries marked as unknown device. I tried to let Windows 7 (64 bit home premium) update the driver, and each one was trying to install the avast firewall miniport driver, but the driver could not install successfully for any of the entries. So I tried to do a full uninstall of avast IS, including use of the uninstall tool, and then a clean install using the latest download of avast IS. The clean install failed to install the firewall driver. I don't see any unknown network adapters in device manager and as expected no instances of the firewall miniport show up either. The install log file is attached. The last line shows:
12.01.2012 08:55:33 system: Error installing C:\Program Files\AVAST Software\Avast\Setup\Inf\x64\aswNdisPt.inf (0x800705AA)
I'm not quite sure when this problem started as I do not use this computer often, but as far as I can recall everything was fine a few months ago when I last spent some time using this computer