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
Group:Base
Path:%SystemRoot%\System32\drivers\ucx01000.sys
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 for USB Controller Extension

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_UCX01000_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The UCX01000 service is using the ucx01000.sys file that is located in the %WinDir%\System32\drivers folder. If the file is corrupted or deleted, you can put it back in there.