Virtual Machines Fail to Start with Error 0x80070569

We have received some reports from people who are seeing an error 0x80070569 when they try to start or live migrate virtual machines on Windows Server 2012.  After some investigation we have found that this is usually caused by the use of a custom group policy setting in their domain. We have written a KB… Read more

Compacting Virtual Hard Disks in Windows 8 / Windows Server 2012

Recently the “Ask the Core Team” blog did a great post about compacting a dynamically expanding virtual hard disk in Windows 8 / Windows Server 2012.  You should check out their full post for the details, but the summary is that you now need to manually mount the virtual hard disks in the management operating… Read more

Converting a VHD to a VHDX

In Windows Server 2012 / Windows 8 we have introduced a new virtual hard disk format called “VHDX”.  There are a number of advantages to this format: Support for greater than 2TB disks Better performance for dynamic and differencing disks Better handling of different disk sector sizes And more… But what if you have a… Read more