High CPU use by taskhost.exe when Windows 8.1 user name contains "user" Content provided by Microsoft Applies to: Windows 8.1Windows 8.1 EnterpriseWindows 8.1 ProWindows 8.1 with Bing More Select Product Version All ProductsWindows 8.1 ProWindows 8.1Windows 8.1 EnterpriseWindows 8.1 with Bing 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. Last Updated: Jan 7, 2017 Was this information helpful? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.