ndiswan.sys Troubleshoot and Download

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

ndiswan.sys file MS PPP Framing Driver (Strong Encryption). 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 ndiswan.sys related errors on your device. You can also download ndiswan.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 ndiswan.sys

4.1 List of ndiswan.sys file versions

File info

General information
Filename	ndiswan.sys
File extension	SYS
Description	MS PPP Framing Driver (Strong Encryption)

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 ndiswan.sys file related problems

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

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

ndiswan.sys

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

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

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

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of ndiswan.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 ndiswan.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 ndiswan.sys

System Windows 10

File size 164352 bytes

Date 2017-03-18

Download

File details
	MD5	776151be23b4b5b85d91be913e3e41c7
	SHA1	884b210cd7690a1cd770bf80b61a348cddc6abb1
	SHA256	a7e2c917fca37ece5fe727d7f74156c63703578845041f54b6ca290bfd5e1a52
	CRC32	bd32a603
	Example file location	C:\Windows\System32\drivers\

Filename ndiswan.sys

System Windows 8.1

File size 167936 bytes

Date 2013-08-22

Download

File details
	MD5	11312d35028616e585dcf02afafa56dc
	SHA1	0884804b87561a5cc0816918896707dfd5d95a95
	SHA256	e7b0503faa2b93f6751fd792d2f424b40e2f9a20d9e827253563b916a1cfac06
	CRC32	b11e48ed
	Example file location	C:\Windows\System32\drivers\

Filename ndiswan.sys

System Windows 8

File size 140288 bytes

Date 2012-07-26

Download

File details
	MD5	556db924d61bc4a5e0f95d383e9b1009
	SHA1	fdef6b5fa91b85927155ec49e19c0d5f57d986d9
	SHA256	17848845e920400ca1c97f6a8f1fd9cef66c7b761663efb3809dc80f7f3bb748
	CRC32	6b50b3aa
	Example file location	1: C:\Windows\System32\drivers\

Filename ndiswan.sys

System Windows 7

File size 164352 bytes

Date 2010-11-21

Download

File details
	MD5	53f7305169863f0a2bddc49e116c2e11
	SHA1	5f081d4ce6b3be8dea214c4088f4f875726004d6
	SHA256	881e9346d3c02405b7850adc37e720990712ec9c666a0ce96e252a487fd2ce77
	CRC32	6312f11d
	Example file location	C:\Windows\System32\drivers\

Filename ndiswan.sys

System Windows Vista

File size 169472 bytes

Date 2009-04-11

Download

File details
	MD5	f8158771905260982ce724076419ef19
	SHA1	2203a71a18770b41f218064daae7f2f09f345721
	SHA256	b86ffa790a30ed614a11c87f4d738c913efc0924dc14750d544001d4e9556071
	CRC32	abd63e31
	Example file location	C:\Windows\System32\drivers\

Filename ndiswan.sys

System Windows XP

File size 91520 bytes

Date 2008-04-14

Download

File details
	MD5	edc1531a49c80614b2cfda43ca8659ab
	SHA1	005371445088726ee73e8625a6c7fa0216f1dc06
	SHA256	494042f790f33721328b4451e79842e21919681cc421a4f9633ec4d383e06097
	CRC32	e718eb60
	Example file location	---