Symptoms
You use the built-in VPN client on Windows 8.1 or Windows Server 2012 R2. When you shut down or suspend the system, the computer crashes, and you receive the following error message:
DRIVER_POWER_STATE_FAILURE (9f)
Resolution
To resolve this issue, install the following update:
December 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
