USB Controller Extension (UCX01000) Service Defaults in Windows 8

USB Controller Extension by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:USB Controller Extension
Service name:UCX01000
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UCX01000

Default Behavior

The USB Controller Extension service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If USB Controller Extension fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the UCX01000 service hasn't been started.

Restore Default Startup Configuration of USB Controller Extension

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config UCX01000 start= demand

3. Close the command window and restart the computer.

The UCX01000 service is using the ucx01000.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 8 installation media.