Hi all, I'm following instructions in: http://wiki.xen.org/wiki/Xen_Windows_GplPv and Windows PV driver 1.0.1105 works great for us with Xen 4.1.4. Unfortunately we're experiencing problems trying to uninstall the driver. As the normal uninstall procedure doesn't work we tried following old 0.11.x instructions in both Windows 2008 R2 and Windows 2012 R2 Standard Edition, but then we get the following error (eg, 2008 R2): "Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)" I would appreciate any pointer on how to uninstall (or disable) the driver, and if upgrades are supported even if uninstall is not possible. Thanks in advance! Kind regards, Juan -- Juan J. Martinez Development Manager, MEMSET mail: juan@memset.com web: http://www.memset.com/ Memset Ltd., registration number 4504980. Building 87, Dunsfold Park, Stovolds Hill, Cranleigh, Surrey GU6 8TB, UK.