Fix netbios.sys Errors

Sometimes Windows system displays error messages regarding corrupted or missing netbios.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 netbios.sys file can therefore effect in failed execution of the started process.

netbios.sys file NetBIOS interface 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 netbios.sys related errors on your device. You can also download netbios.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP 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 XP

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 netbios.sys

4.1 List of netbios.sys file versions

File info

General information
Filename	netbios.sys
File extension	SYS
Description	NetBIOS interface driver

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

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

Most common netbios.sys file related problems

There are various types of errors related to netbios.sys file. netbios.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 netbios.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

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

netbios.sys

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

Problems related to netbios.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 netbios.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 netbios.sys errors in just few steps?

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

netbios.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 netbios.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 netbios.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 netbios.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 netbios.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the netbios.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 netbios.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 netbios.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 netbios.sys file

The last solution is to manually download and replace netbios.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 netbios.sys file.

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

Windows 10: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\drivers\
Windows 8: 1: C:\Windows\System32\drivers\
Windows 7: C:\Windows\System32\drivers\
Windows Vista: C:\Windows\System32\drivers\
Windows XP: ---

If the steps did not solve your netbios.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 netbios.sys

System Windows 10

File size 47520 bytes

Date 2017-03-18

Download

File details
	MD5	7a10c4fb397321f404f5e16c040e56c7
	SHA1	c24126f58cb7170aab431768ecb4135c0f520a60
	SHA256	c64f6dbadfd0fcb8300666cfd00c79600277aa22c500cf7e6ea64c1fd3247f97
	CRC32	1b554962
	Example file location	C:\Windows\System32\drivers\

Filename netbios.sys

System Windows 8.1

File size 37888 bytes

Date 2014-11-21

Download

File details
	MD5	fe7a0cd973dd4a53e4c0efd4d2508362
	SHA1	8d20387983db7e12c99bcc4106b62d7fa16134ef
	SHA256	af40b596fbe0287846217207d7dfd803333338948b8f21ac9d4964e30948ad21
	CRC32	8a9e99aa
	Example file location	C:\Windows\System32\drivers\

Filename netbios.sys

System Windows 8

File size 36864 bytes

Date 2012-07-26

Download

File details
	MD5	4ca677a214248db8227f8035b546f7d0
	SHA1	d8f6322c73214b33286c1ecced1271038b4b3a91
	SHA256	50b89a5af9423ee0820e7e15f22345ef9efb284882b2c4cdc6e86b898c74108d
	CRC32	059c70ac
	Example file location	1: C:\Windows\System32\drivers\

Filename netbios.sys

System Windows 7

File size 44544 bytes

Date 2009-07-14

Download

File details
	MD5	86743d9f5d2b1048062b14b1d84501c4
	SHA1	3be866b6e46e89e893e40875218781c967615032
	SHA256	dbf6d6a60ab774fcb0f464ff2d285a7521d0a24006687b243ab46b17d8032062
	CRC32	139dd79b
	Example file location	C:\Windows\System32\drivers\

Filename netbios.sys

System Windows Vista

File size 44544 bytes

Date 2008-01-21

Download

File details
	MD5	a499294f5029a7862adc115bda7371ce
	SHA1	4801aa1e0d6f5f5eede48fa0a3d6ce9da23ad9dd
	SHA256	6be0aafe4eb59e056a929d6c1a009d8dfd547025481108cefb12e5d6f86dbe14
	CRC32	aa520008
	Example file location	C:\Windows\System32\drivers\

Filename netbios.sys

System Windows XP

File size 34688 bytes

Date 2008-04-14

Download

File details
	MD5	5d81cf9a2f1a3a756b66cf684911cdf0
	SHA1	c74f9616c2e8c5b5cb9d672b1d03567fcfacca05
	SHA256	7989c36607caea17afa2c1c9904145ca0714a54b9f712d9d4c1ab140d0b2cc0c
	CRC32	fd44290b
	Example file location	---