How to Download and Fix msasn1.dll?

Sometimes Windows system displays error messages regarding corrupted or missing msasn1.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 msasn1.dll file can therefore effect in failed execution of the started process.

msasn1.dll file ASN.1 Runtime APIs. 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 msasn1.dll related errors on your device. You can also download msasn1.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, 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 7, Windows Vista, 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 msasn1.dll

4.1 List of msasn1.dll file versions

File info

General information
Filename	msasn1.dll
File extension	DLL
Description	ASN.1 Runtime APIs

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 msasn1.dll file related problems

There are various types of errors related to msasn1.dll file. msasn1.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 msasn1.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

msasn1.dll is corrupted
msasn1.dll cannot be located
Runtime Error - msasn1.dll
msasn1.dll file error
msasn1.dll file cannot be loaded. Module was not found
cannot register msasn1.dll file:
msasn1.dll file could not be loaded
msasn1.dll file doesn't exist

msasn1.dll

Application could not be started because msasn1.dll file is missing. Reinstall the application to solve the problem.

Problems related to msasn1.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 msasn1.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 msasn1.dll errors in just few steps?

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

msasn1.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 msasn1.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 msasn1.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 msasn1.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 msasn1.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the msasn1.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 msasn1.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 msasn1.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 msasn1.dll file

The last solution is to manually download and replace msasn1.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 msasn1.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of msasn1.dll file example directory paths.

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

If the steps did not solve your msasn1.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 msasn1.dll

System Windows 10

File size 49656 bytes

Date 2017-03-18

Download

File details
	MD5	83f8bdd4e9b78710a2cc65e1645fbc6f
	SHA1	8b70ddbf223251d58d16093c540bf6313c228738
	SHA256	da705947ca7db19bdf547b700c15ccfdd1a75cc17282b71914a0ebcfade52b91
	CRC32	21699816
	Example file location	C:\Windows\System32\

Filename msasn1.dll

System Windows 8.1

File size 51608 bytes

Date 2014-11-21

Download

File details
	MD5	209fea49a8a7d43aef2444025ef1fdfa
	SHA1	9f0065a79b9a76cb42a6f3cd453b98406b3fe80b
	SHA256	22c0411fa8298c80dd3b93778fd81fa2de8feaa8f299ba06add78cd6dac2e3d0
	CRC32	febe4b66
	Example file location	C:\Windows\System32\

Filename msasn1.dll

System Windows 8

File size 57344 bytes

Date 2012-07-26

Download

File details
	MD5	afaacbe85092fbd8ee7f54ca7ff3f0f1
	SHA1	c6ecc5e66a798138a01e780e66f8c28c8b4b49b8
	SHA256	bd79e678b1faa611a9855507b3c02175448d8ea335d52ff93520f1865ff88523
	CRC32	d13d6156
	Example file location	1: C:\Windows\System32\

Filename msasn1.dll

System Windows 7

File size 46592 bytes

Date 2010-11-21

Download

File details
	MD5	884415bd4269c02eaf8e2613bf85500d
	SHA1	c3a64f05c210b38c69d8f1fc1d74a71b56ada30c
	SHA256	efe771709ec942694fd206ac8d0a48ed7dcd35036f074268e4aecd68ac982cea
	CRC32	537c3950
	Example file location	C:\Windows\System32\

Filename msasn1.dll

System Windows 7

File size 34304 bytes

Date -0001-11-30

Download

File details
	MD5	938f39b50bafe13d6f58c7790682c010
	SHA1	9a1926a912ce2ed14431c8cddbd7638f56ad1fe5
	SHA256	902000ee51efeabaf6a4b30f880aa37083d2232c6fc622ca513c4a823390feda
	CRC32	c8581339
	Example file location	C:\Windows\System32\

Filename msasn1.dll

System Windows Vista

File size 80896 bytes

Date 2008-01-21

Download

File details
	MD5	3b5a2a1d3eebd0bf54d144b8007daeec
	SHA1	bab21e32c1ee5e29e74199cae5a3efc285c9b072
	SHA256	13f5cca3c16698796d378d6f44d1f2e9ffdde1f8bb3ae675fe261a2ea8058227
	CRC32	3fc57d0b
	Example file location	---

Filename msasn1.dll

System Windows Vista

File size 59904 bytes

Date -0001-11-30

Download

File details
	MD5	a49297c6446f46a4c86d03d0872ce2d2
	SHA1	eda31c32d8449e704359757760c8d36a3412b57e
	SHA256	a49ff73b5cbbe0aa9fc8ecc28a629501c96887fb1e1a3447835f10430b9195ee
	CRC32	297059a2
	Example file location	---

Filename msasn1.dll

System Windows XP

File size 57344 bytes

Date 2008-04-14

Download

File details
	MD5	a11f1ea5346165347bf54c1f959c3fbc
	SHA1	e3b7e1519f060e76b7e5579c1974e6260bcdb324
	SHA256	c6964e01b3f891cef4959dfc703af5fc5d6e8fe92f1af8dd2c95fecaa0f38eed
	CRC32	3e690cdf
	Example file location	---