USB Attached SCSI (UAS) Driver (UASPStor) Service Defaults in Windows 10

Microsoft Uasp Driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:USB Attached SCSI (UAS) Driver
Service name:UASPStor
Service type:kernel
Error control:normal
Path:%SystemRoot%\System32\drivers\uaspstor.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UASPStor

Default Behavior

USB Attached SCSI (UAS) Driver is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If USB Attached SCSI (UAS) Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the UASPStor service has failed to start due to the error.

Restore Default Startup Configuration for USB Attached SCSI (UAS) Driver

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_UASPStor_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The UASPStor service is using the uaspstor.sys file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.