Windows 8 Services

USB Attached SCSI (UAS) Driver - Windows 8 Service

Microsoft Uasp Driver 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:USB Attached SCSI (UAS) Driver
Service name:UASPStor
Error control:normal

Default Behavior

The USB Attached SCSI (UAS) Driver service is a kernel mode driver. If USB Attached SCSI (UAS) Driver fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the UASPStor service has failed to start.

Restore Default Startup Type of USB Attached SCSI (UAS) Driver

Automated Restore

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

2. Save the RestoreUSBAttachedSCSIUASDriverWindows8.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 uaspstor.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.