Microsoft Windows SYS USBSTOR.SYS

Download USBSTOR.SYS and Fix Blue Screen Errors

Last Updated: 11/25/2023
[Time Required for Reading: 3.5 minutes]

USBSTOR.SYS uses the SYS file extension, which is more specifically known as a USB Mass Storage Class Driver file. It is classified as a Win32 EXE (Dynamic link library) file, created for Microsoft® Windows® Operating System by Microsoft.

The first version of USBSTOR.SYS for Windows Vista was introduced on 11/08/2006 in Windows Vista. The latest version update [v10.0.15063.0 (WinBuild.160101.0800)] for Windows was 10 released on 07/29/2015. USBSTOR.SYS is found in Windows 10, Windows 8.1, and Windows 8.

Please continue reading to find your correct USBSTOR.SYS file version download (free), detailed file information, and SYS file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	USBSTOR.SYS
File Extension:	SYS file extension
Description:	USB Mass Storage Class Driver
Object File Type:	Dynamic link library
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x18000
Code Size:	87040

View Other USBSTOR.SYS Information

File Info	Description
File Size:	105 kB
File Modification Date/Time:	2017:03:18 18:18:23+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 EXE
MIME Type:	application/octet-stream
Warning:	Possibly corrupt Version resource
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2031:01:09 03:03:07+00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	87040
Initialized Data Size:	11264
Uninitialized Data Size:	0
Entry Point:	0x18000
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	10.0
Subsystem:	Native
File Version Number:	10.0.15063.0
Product Version Number:	10.0.15063.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	USB Mass Storage Class Driver
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	usbstor.sys
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	usbstor.sys
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are USBSTOR.SYS Error Messages?

USBSTOR.SYS Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with USBSTOR.SYS. Most of the issues concerning sys files involve Blue Screen of Death (BSOD) errors. These types of USBSTOR.SYS errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. Windows update) issues. Some of these errors include:

USBSTOR.SYS could not be found.
USBSTOR.SYS failed to load.
The file USBSTOR.SYS is missing or corrupt.
Windows failed to start - USBSTOR.SYS.

A problem has been detected and Windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: USBSTOR.SYS.

:( Your PC ran into a problem that it couldn't handle, and now needs to restart. You can search for the error online: [BSOD] (USBSTOR.SYS).

STOP 0x0000000A: IRQL NOT LESS EQUAL (USBSTOR.SYS) STOP 0×0000007A: KERNEL DATA INPAGE (USBSTOR.SYS) STOP 0x0000007E: SYSTEM THREAD EXCEPTION NOT HANDLED (USBSTOR.SYS) STOP 0x0000001E: KMODE EXCEPTION NOT HANDLED (USBSTOR.SYS) STOP 0x0000003B: SYSTEM SERVICE EXCEPTION (USBSTOR.SYS) STOP 0x00000050: PAGE FAULT IN A NONPAGED AREA (USBSTOR.SYS)

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter USBSTOR.SYS BSOD errors after you've installed new hardware, software (Windows), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to USBSTOR.SYS Blue Screen of Death errors. Therefore, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

GEEK TIP : As a rule of thumb, it's always a good idea to create a Windows "Snapshot" backup / System Restore Point before making any hardware or software changes to your computer. That way, it's very easy to restore your system in the unfortunate event you encounter a USBSTOR.SYS Blue Screen of Death error after recent changes.

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How to Fix USBSTOR.SYS Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your USBSTOR.SYS issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the USBSTOR.SYS error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing USBSTOR.SYS file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt USBSTOR.SYS files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for USBSTOR.SYS issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many USBSTOR.SYS error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the USBSTOR.SYS error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your USBSTOR.SYS File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate USBSTOR.SYS file version. We maintain a comprehensive database of 100% malware-free USBSTOR.SYS files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download USBSTOR.SYS Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows Vista: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_ed315e80\
Windows Vista: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_c0c342db\
Windows Vista: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_84963b7b\
Windows 7: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_amd64_neutral_0725c2806a159a9d\
Windows 7: C:\Windows\System32\drivers\
Show 6 more directories +

Windows 8: C:\Windows\System32\drivers\
Windows 8: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_x86_e58b7d673ad9e3f4\
Windows 8.1: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_x86_53fdf2e632cdca60\
Windows 10: C:\Windows\System32\drivers\
Windows 10: C:\Windows\System32\DriverStore\FileRepository\usbstor.inf_x86_a61d10e98c95e242\

Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve USBSTOR.SYS problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download USBSTOR.SYS Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying USBSTOR.SYS to your appropriate Windows system directory. Microsoft typically does not release Windows SYS files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing USBSTOR.SYS and all other SYS files for Windows. An incorrectly installed SYS file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

File Name

Software Version

File Version

Architecture

USBSTOR.SYS

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	107936
File Date:	03/18/2017
MD5 Checksum:	c71532ed28cfec78b7c1240858f74b16
SHA1 Checksum:	ba267cf3a1baef5bc0c79146e2b3e11353903bcf
SHA256 Checksum:	5d45111f558c5d1923dd29181bc2bdff1fd4f47dc2f576c31c46b38793fae07e
CRC32:
File Directory Location:	C:\Windows\System32\drivers\ C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	10.0
Initialized Data Size:	11264
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows Vista

File Name

Software Version

File Version

Architecture

USBSTOR.SYS

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	64512
MD5 Checksum:	f269e18f5a5b2f69038e0af2d2cd9466
SHA1 Checksum:	e38400447ce8a00108e4144f2b1765f97b32c20e
SHA256 Checksum:	67652061f3d43c7040ee51dde081a8dfdd8f973273c8b8f5c73de618972f894b
CRC32:
File Directory Location:	C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
There is no information available.

USBSTOR.SYS

6.0.6002.18005

6.0.6002.18005 (lh_sp2rtm.090410-1830)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6002.18005
File Version:	6.0.6002.18005 (lh_sp2rtm.090410-1830)
File Size:	77824
File Date:	04/11/2009
MD5 Checksum:	b854c1558fca0c269a38663e8b59b581
SHA1 Checksum:	a3669b77dfb976840bf798959dbdcaf13f8e73f9
SHA256 Checksum:	08cc36b33fa2281fc88671be051863aa8ca911446d24596049db77fb4cb09ea6
CRC32:
File Directory Location:	C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
File Type:	Win64 EXE
Image Version:	6.0
Initialized Data Size:	8704
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Native
Subsystem Version:	6.0
File Modification Date/Time:	04/11/2009

USBSTOR.SYS

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	66048
MD5 Checksum:	586d9876a4945779c8eea926c0d16889
SHA1 Checksum:	21ac57557d1f970733ed389110bdd7680fe0f6e9
SHA256 Checksum:	7534e7d9665942ca7663e6e5f5f1607752f9e09dd67d036da5c520e9c11e53e2
CRC32:
File Directory Location:	C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
There is no information available.

Windows 8.1

File Name

Software Version

File Version

Architecture

USBSTOR.SYS

6.3.9600.17331

6.3.9600.17331 (winblue_r3.140830-0859)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.17331
File Version:	6.3.9600.17331 (winblue_r3.140830-0859)
File Size:	120640
File Date:	11/21/2014
MD5 Checksum:	b4a53fa9af30243cc7edfac75a029624
SHA1 Checksum:	3e2238aedf22ba2029e0f5169e1a3731f8640012
SHA256 Checksum:	8c1649b94bd7744c5b59802ce02df52a1d6bd261c23179bea76cc38318c0c564
CRC32:
File Directory Location:	C:\Windows\System32\drivers\ C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	6.3
Initialized Data Size:	12288
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	6.3
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

USBSTOR.SYS

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	97008
File Date:	07/26/2012
MD5 Checksum:	727ce341df7efdc94f2868393549f497
SHA1 Checksum:	d953768a9776e481e69871b0f9a16074b4d3ac86
SHA256 Checksum:	7e2f2af92561514f4c78c5d4f825f2e9f942a66fae450aa1ea6922cbd10cc0a6
CRC32:
File Directory Location:	C:\Windows\System32\drivers\ C:\Windows\System32\DriverStore\FileRepository ...

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	6.2
Initialized Data Size:	7680
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

Windows 7

File Name

Software Version

File Version

Architecture

USBSTOR.SYS

6.1.7601.17514

6.1.7601.17514 (win7sp1_rtm.101119-1850)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7601.17514
File Version:	6.1.7601.17514 (win7sp1_rtm.101119-1850)
File Size:	91648
File Date:	11/21/2010
MD5 Checksum:	d76510cfa0fc09023077f22c2f979d86
SHA1 Checksum:	30dcdb1d45bf0fa06d5ba254b49e2d92ba9e65aa
SHA256 Checksum:	5662281c6d515423255d3c262ea368dbafc250235e535fbfa3e59d3487695439
CRC32:
File Directory Location:	C:\Windows\System32\DriverStore\FileRepository ... C:\Windows\System32\drivers\

File Version, System, and Machine Information
File Type:	Win64 EXE
Image Version:	6.1
Initialized Data Size:	9728
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Native
Subsystem Version:	6.1
File Modification Date/Time:	11/21/2010

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Files Related to USBSTOR.SYS

SYS Files Related to USBSTOR.SYS

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
ykinx86.sys	NDIS6.30 Miniport Driver for Marvell Yukon Ethernet Controller	Marvell Yukon Ethernet Controller (12.10.17.3)	242688	C:\Windows\System32\en-US\
fdc.sys	Floppy Disk Controller Driver	Microsoft® Windows® Operating System (10.0.15063.0)	25600	C:\Windows\Fonts\
swmidi.sys	Microsoft GS Wavetable Synthesizer	Microsoft® Windows® Operating System (5.1.2600.5512)	56576	C:\Windows\System32\winevt\Logs\
isapnp.sys	PNP ISA Bus Driver	Microsoft® Windows® Operating System (10.0.15063.0)	48032	C:\Windows\Fonts\
BTHUSB.SYS	Bluetooth Miniport Driver	Microsoft® Windows® Operating System (6.0.6000.16386)	34304	C:\Windows\Fonts\

Other Files Related to USBSTOR.SYS

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 8	5957	C:\Windows\L2Schemas\
OneX_v1.xsd	XML Schema Definition	Windows 8.1	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 10	6201	C:\Windows\L2Schemas\
WLAN_policy_v1.xsd	XML Schema Definition	Windows Vista	6446	C:\Windows\L2Schemas\

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