Download usbser.sys to Fix Errors

Sometimes Windows system displays error messages regarding corrupted or missing usbser.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent usbser.sys file can therefore effect in failed execution of the started process.

usbser.sys file USB Serial Driver. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of usbser.sys related errors on your device. You can also download usbser.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista, Windows Vista

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download usbser.sys

4.1 List of usbser.sys file versions

File info

General information
Filename	usbser.sys
File extension	SYS
Description	USB Serial Driver

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Dynamic link library
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common usbser.sys file related problems

There are various types of errors related to usbser.sys file. usbser.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to usbser.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

usbser.sys is corrupted
usbser.sys cannot be located
Runtime Error - usbser.sys
usbser.sys file error
usbser.sys file cannot be loaded. Module was not found
cannot register usbser.sys file:
usbser.sys file could not be loaded
usbser.sys file doesn't exist

usbser.sys

Application could not be started because usbser.sys file is missing. Reinstall the application to solve the problem.

Problems related to usbser.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing usbser.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix usbser.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

usbser.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with usbser.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to usbser.sys file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of usbser.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to usbser.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the usbser.sys file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the usbser.sys file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the usbser.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace usbser.sys file

The last solution is to manually download and replace usbser.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded usbser.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of usbser.sys file example directory paths.

Windows 10: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\DriverStore\FileRepository\mdmcpq.inf_x86_c9c377f7d01e9928\
Windows 8: 1: C:\Windows\System32\DriverStore\FileRepository\mdmcpq.inf_x86_c9c377f7d01e9928\
Windows 7: ---
Windows Vista: ---
Windows Vista: ---
Windows Vista: ---

If the steps did not solve your usbser.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename usbser.sys

System Windows 10

File size 51712 bytes

Date 2017-03-18

Download

File details
	MD5	e4ce0bc41cd8e422f3bda5c49f2eed73
	SHA1	e874f6a99e72e621415852ce2f1606f423292e67
	SHA256	953deda6d4a4caad930f91df1c6d47606d4c8029243488a951f86b6fd985a3c5
	CRC32	46464896
	Example file location	C:\Windows\System32\drivers\

Filename usbser.sys

System Windows 8.1

File size 27136 bytes

Date 2013-08-22

Download

File details
	MD5	8ed4577f2136f1a4ce8285ed811e5c09
	SHA1	fc66a2d147d7cef062b90e04d34728b91fff8fc3
	SHA256	3ce0ad5bc6da128e2037706050d460fa891034c9a4e764b49a9d224fa03f314e
	CRC32	5d74e8f7
	Example file location	C:\Windows\System32\DriverStore\FileRepository\mdmcpq.inf_x86_c9c377f7d01e9928\

Filename usbser.sys

System Windows 8

File size 27648 bytes

Date 2012-07-26

Download

File details
	MD5	0f3acd39400bbfa5ae7ba2fc86d5d446
	SHA1	cb22aeceee00c128c0f4d49286e2ed38f6f1ad59
	SHA256	6ef0637efe3c50cd2fe98d053c01464cc49414cc115f3e53e624825b91101b34
	CRC32	3649504d
	Example file location	1: C:\Windows\System32\DriverStore\FileRepository\mdmcpq.inf_x86_c9c377f7d01e9928\

Filename usbser.sys

System Windows 7

File size 32768 bytes

Date 2010-11-21

Download

File details
	MD5	4acee387fa8fd39f83564fcd2fc234f2
	SHA1	efbf847cd0faa8b2205d059195404b58c17b638c
	SHA256	3d62de27027b8c032d15eb74f97a14b4ec24e67052c1163862740d6312b2569b
	CRC32	20dd919d
	Example file location	---

Filename usbser.sys

System Windows Vista

File size 32768 bytes

Date 2008-01-21

Download

File details
	MD5	5a8d98330f21e69d19459ed65847111d
	SHA1	ea295e1b84cc8743c0c52f20b17b62c42cc5ba51
	SHA256	13282183d056b7f068a92798a58b9dff74688e7675d6c117d7a17c0989bf60c1
	CRC32	3cbd9b24
	Example file location	---

Filename usbser.sys

System Windows Vista

File size 32768 bytes

Date -0001-11-30

Download

File details
	MD5	e9908fa694f8babda7e00d6ee675abcf
	SHA1	c0a112e39ec41bb7b4cbef4129415b4f5cdb0119
	SHA256	b4886fbee505de20d08647cfec2ab95c57a9cd9d79654c4887062ec1a6e7dcb9
	CRC32	c75fa910
	Example file location	---

Filename usbser.sys

System Windows Vista

File size 32768 bytes

Date -0001-11-30

Download

File details
	MD5	f7386007fb19e7685fc7b298560aa81f
	SHA1	73056313e23d7735f9f96098f6d23b9293978548
	SHA256	1d29345f34ff08da5ac645c183fcac7a4a779042d2bc6cd60d4376082d4feeed
	CRC32	e5806e0c
	Example file location	---