High CPU use by taskhost.exe when Windows 8.1 user name contains "user"

Applies to: Windows 8.1Windows 8.1 EnterpriseWindows 8.1 Pro More

Symptoms


The taskhost.exe process intermittently consumes high CPU on Windows 8.1 computers when a user account in the local accounts database contains the word "user

Cause


This is a problem in the component DFPCommon.dll in Windows 8.1.

Resolution


To resolve the issue, do not create a user account containing the string "user" on the computer.