Windows 10 Services

USB Host Support Library - Windows 10 Service

USB Controller Extension by Microsoft Corporation.

This service also exists in Windows 8.

Startup Type

Windows 10 version Home Pro Education Enterprise
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Default Properties

Display name:USB Host Support Library
Service name:Ucx01000
Error control:normal
Group:Boot Bus Extender

Default Behavior

The USB Host Support Library service is a kernel mode driver. If USB Host Support Library fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the Ucx01000 service has failed to start.


If USB Host Support Library is stopped, the following services cannot start:

Restore Default Startup Type for USB Host Support Library

Automated Restore

1. Select your Windows 10 edition and release, and then click on the Download button below.

2. Save the RestoreUSBHostSupportLibraryWindows10.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the ucx01000.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.