Windows 10 Services

Simple Peripheral Bus Support Library - Windows 10 Service

SPB Class 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: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 10 startup proceeds, but a message box is displayed informing you that the SpbCx service has failed to start.


Simple Peripheral Bus Support Library is unable to start, if the Microsoft ACPIEx Driver service is stopped or disabled.

If Simple Peripheral Bus Support Library is stopped, the following services cannot start:

Restore Default Startup Type for Simple Peripheral Bus Support Library

Automated Restore

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

2. Save the RestoreSimplePeripheralBusSupportLibraryWindows10.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 SpbCx.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.