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How to Repair cng.sys? Download Now

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

cng.sys file Kernel Cryptography, Next Generation. 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 cng.sys related errors on your device. You can also download cng.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7
User popularity

Fix cng.sys errors

File info

General information
Filename cng.sys
File extension SYS
Description Kernel Cryptography, Next Generation
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.)
cng.sys

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

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

cng.sys

Error

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

OK

Problems related to cng.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 cng.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.

cng.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

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with cng.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.

Windows Update

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

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. 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 cng.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

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 cng.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the cng.sys file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

Windows Recovery

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

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

If all the above-mentioned methods failed and the cng.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 cng.sys file

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

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

If the steps did not solve your cng.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 cng.sys
System Windows 10
File size 510392 bytes
Date 2017-03-18
Download
File details
MD5 d08ea129a8c618ea33cab57f2fb0bb5e
SHA1 0b362f525bfdd57e57b1eb951bf428c82338124d
SHA256 47da7f42e14f73c4e5deb08ac3e8abf78666fff8ebbfd80f62004e441d86b12e
CRC32 5ba519ff
Example file location C:\Windows\System32\drivers\
Filename cng.sys
System Windows 8.1
File size 478776 bytes
Date 2014-11-21
Download
File details
MD5 c295f66531cf9dcb5491dcd2c1a4a2b6
SHA1 e33a3ec9f3f5c44e4bb7237f553072bc5cdc6b4d
SHA256 669e77dd0faaa8c23d7b1f050383ff51db4f3cde47c4a9023c30204539bdeab9
CRC32 2a550015
Example file location C:\Windows\System32\drivers\
Filename cng.sys
System Windows 8
File size 493136 bytes
Date 2012-07-26
Download
File details
MD5 fc5c6fc2d889d34cdfe50ecbce0eddd6
SHA1 758b25cd74ec39ae67121969a068ae75653ab6e5
SHA256 36e90fcf63c683c3d0c3f1ba6c224763dd14f75e6e5570de13e838d3394480f9
CRC32 44f0d638
Example file location 1: C:\Windows\System32\drivers\
Filename cng.sys
System Windows 7
File size 459248 bytes
Date 2010-11-21
Download
File details
MD5 d5fea92400f12412b3922087c09da6a5
SHA1 edb7b954ac306d50337cc191783c764c54255675
SHA256 c8cd9215d26d3295fe487c96a4fc3f4c8afed764ae9445d9858d7489823a8a2b
CRC32 6c8c9d64
Example file location C:\Windows\System32\drivers\