Upgrading to Windows 10 Anniversary Edition and Hyper-V

After updating from Windows 10 to the Anniversary Update (build 1607), I experienced issues with Hyper-V. I was not able to start my virtual machines.

An error message was:

Export failed for virtual machine 'name' (guid) with error 'A virtual disk support provider for the specified file was not found.' (0xC03A0014).

Based on my troubleshooting steps, I recommend the following steps to reduce the upgrade pain.

Note: Since I already updated Windows 10 before getting into trouble, I was not able to test this in this order, so your feedback is important.

Before the update

1. Shutdown all Hyper-V virtual machines.
2. Go to Start > Turn Windows Features on or off.
3. Uncheck Hyper-V and confirm the reboot question.

Update Windows

• Update to Windows 10 Anniversary Edition, you can force this. Note that you have control of when you start the download, however, once the download was done I was not able to postpone the actual update.

After the Windows update

1. Go to Start > Turn Windows Features on or off.
2. Check Hyper-V and confirm the reboot question.
3. After the reboot, start Hyper-V Manager
4. Hyper-V Manager > Your virtual machine(s) > Right-click to update configuration version.
5. Hyper-V Manager > Go to Virtual Switch Manager to re-create your virtual LAN and/or WIFI devices.
6. In your VM configuration, configure the network device from the previous step.