ntasn1.dll Troubleshoot and Download

Sometimes Windows system displays error messages regarding corrupted or missing ntasn1.dll 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 ntasn1.dll file can therefore effect in failed execution of the started process.

ntasn1.dll file Microsoft ASN.1 API. 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 ntasn1.dll related errors on your device. You can also download ntasn1.dll file compatible with Windows 10, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8

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 ntasn1.dll

4.1 List of ntasn1.dll file versions

File info

General information
Filename	ntasn1.dll
File extension	DLL
Description	Microsoft ASN.1 API

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 ntasn1.dll file related problems

There are various types of errors related to ntasn1.dll file. ntasn1.dll 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 ntasn1.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

ntasn1.dll is corrupted
ntasn1.dll cannot be located
Runtime Error - ntasn1.dll
ntasn1.dll file error
ntasn1.dll file cannot be loaded. Module was not found
cannot register ntasn1.dll file:
ntasn1.dll file could not be loaded
ntasn1.dll file doesn't exist

ntasn1.dll

Application could not be started because ntasn1.dll file is missing. Reinstall the application to solve the problem.

Problems related to ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll errors in just few steps?

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

ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll 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 ntasn1.dll file

The last solution is to manually download and replace ntasn1.dll 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 ntasn1.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of ntasn1.dll file example directory paths.

Windows 10: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\
Windows 8: 1: C:\Windows\System32\

If the steps did not solve your ntasn1.dll 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 ntasn1.dll

System Windows 10

File size 177200 bytes

Date 2017-03-18

Download

File details
	MD5	ad403071ddbaf801add9d856cb690997
	SHA1	758dceff8f06d63d55815c72a7753b3842903c8b
	SHA256	aace5b2b4221146d84a59f158d01e8e5b50cfe3c9461da0aac0cc24938cf4785
	CRC32	87c8c0da
	Example file location	C:\Windows\System32\

Filename ntasn1.dll

System Windows 8.1

File size 165728 bytes

Date 2014-11-21

Download

File details
	MD5	5e2ca5eccf3653379ac31e68bb8918ce
	SHA1	9f76f9cc646dc909e87f4e61208f07111c2ff52f
	SHA256	2acde70e675490b0a8f1c35cd83ae8581a925e849864885fcf8889804ea6c6b2
	CRC32	1e0c467d
	Example file location	C:\Windows\System32\

Filename ntasn1.dll

System Windows 8

File size 149504 bytes

Date 2012-07-26

Download

File details
	MD5	d12de9350321cf21238fca4ed76b12a7
	SHA1	2f9ca3150dd7c3ee5d02826d40fab154711e39f6
	SHA256	cbd5849728671e7998ae9bcda6e521ef8f21f1d0f7cdfa2bcb30d49f1f92c4a8
	CRC32	6a1dec8b
	Example file location	1: C:\Windows\System32\