Windows 8 Services

Simple Peripheral Bus Support Library - Windows 8 Service

SPB Class Extension by Microsoft Corporation.

This service also exists in Windows 10.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core Manual Manual Manual
Pro Manual Manual Manual
Enterprise Manual Manual Manual

Default Properties

Display name:Simple Peripheral Bus Support Library
Service name:SpbCx
Error control:normal

Default Behavior

The Simple Peripheral Bus Support Library service is a kernel mode driver. If Simple Peripheral Bus Support Library fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the SpbCx service has failed to start.


Simple Peripheral Bus Support Library won't start, if the Microsoft ACPIEx Driver service is stopped or disabled.

Restore Default Startup Type of Simple Peripheral Bus Support Library

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreSimplePeripheralBusSupportLibraryWindows8.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.

Note. Make sure that the SpbCx.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 8 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.