Microsoft Windows DLL ntasn1.dll

Fixing Ntasn1.dll DLL Issues - How to Download and Repair

Last Updated: 11/26/2024
[Time to Read Article: 5 minutes]

Microsoft ASN.1 API files such as ntasn1.dll utilize the DLL file extension. This file is considered a Win32 DLL (Dynamic link library) file, and was first created by Microsoft for the Microsoft® Windows® Operating System software package.

The release of ntasn1.dll introduced for Windows was on 08/01/2012 in Windows 8. The most recent release for Windows 10 launched on 07/29/2015 [version 10.0.15063.0 (WinBuild.160101.0800) release]. ntasn1.dll is found in Windows 10, Windows 8.1, and Windows 8.

Please continue reading to find your correct ntasn1.dll file version download (free), detailed file information, and DLL file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	ntasn1.dll
File Extension:	DLL file extension
Description:	Microsoft ASN.1 API
Object File Type:	Dynamic link library
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x18230
Code Size:	151040

View Other ntasn1.dll Information

File Info	Description
File Size:	173 kB
File Modification Date/Time:	2017:03:18 18:19:20+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Warning:	Possibly corrupt Version resource
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2060:12:22 19:31:56+00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	151040
Initialized Data Size:	15872
Uninitialized Data Size:	0
Entry Point:	0x18230
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	10.0
Subsystem:	Windows GUI
File Version Number:	10.0.15063.0
Product Version Number:	10.0.15063.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	Microsoft ASN.1 API
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	ntasn1.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	ntasn1.dll
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are ntasn1.dll Error Messages?

Dynamic Link Library ntasn1.dll Errors

ntasn1.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like ntasn1.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like 3DViewer.ResourceResolver.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same ntasn1.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when ntasn1.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common ntasn1.dll errors include:

Access Violation at address - ntasn1.dll.
ntasn1.dll could not be found.
Cannot find C:\Windows\System32\ntasn1.dll.
Cannot register ntasn1.dll.
Cannot start Windows. A required component is missing: ntasn1.dll. Please install Windows again.
Failed to load ntasn1.dll.
The application has failed to start because ntasn1.dll was not found.
The file ntasn1.dll is missing or corrupt.
This application failed to start because ntasn1.dll was not found. Re-installing the application may fix this problem.

Your ntasn1.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, ntasn1.dll file corruption could be caused from a power outage when loading Windows, system crash while loading ntasn1.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix ntasn1.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your ntasn1.dll issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the ntasn1.dll error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing ntasn1.dll file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt ntasn1.dll files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for ntasn1.dll issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many ntasn1.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the ntasn1.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your ntasn1.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate ntasn1.dll file version. We maintain a comprehensive database of 100% malware-free ntasn1.dll files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download ntasn1.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

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

Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve ntasn1.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download ntasn1.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying ntasn1.dll to your appropriate Windows system directory. Microsoft typically does not release Windows DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing ntasn1.dll and all other DLL files for Windows. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

File Name

Software Version

File Version

Architecture

ntasn1.dll

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	177200
File Date:	03/18/2017
MD5 Checksum:	ad403071ddbaf801add9d856cb690997
SHA1 Checksum:	758dceff8f06d63d55815c72a7753b3842903c8b
SHA256 Checksum:	aace5b2b4221146d84a59f158d01e8e5b50cfe3c9461da0aac0cc24938cf4785
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	15872
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows 8.1

File Name

Software Version

File Version

Architecture

ntasn1.dll

6.3.9600.17415

6.3.9600.17415 (winblue_r4.141028-1500)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.17415
File Version:	6.3.9600.17415 (winblue_r4.141028-1500)
File Size:	165728
File Date:	11/21/2014
MD5 Checksum:	5e2ca5eccf3653379ac31e68bb8918ce
SHA1 Checksum:	9f76f9cc646dc909e87f4e61208f07111c2ff52f
SHA256 Checksum:	2acde70e675490b0a8f1c35cd83ae8581a925e849864885fcf8889804ea6c6b2
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	15360
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.3
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

ntasn1.dll

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	149504
File Date:	07/26/2012
MD5 Checksum:	d12de9350321cf21238fca4ed76b12a7
SHA1 Checksum:	2f9ca3150dd7c3ee5d02826d40fab154711e39f6
SHA256 Checksum:	cbd5849728671e7998ae9bcda6e521ef8f21f1d0f7cdfa2bcb30d49f1f92c4a8
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	15872
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

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Files Related to ntasn1.dll

DLL Files Related to ntasn1.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
pcwum.dll	Performance Counters for Windows Native DLL	Microsoft® Windows® Operating System (6.2.9200.16384)	31232	C:\Windows\Logs\DPX\
WSManMigrationPlugin.dll	WinRM Migration Plugin	Microsoft® Windows® Operating System (6.0.6001.18000)	253440	C:\Windows\Logs\DPX\
UIAutomationTypes.dll	Dynamic Link Library	Windows 8.1	106616	C:\Windows\inf\WmiApRpl\0009\
Windows.Management.Wor...	Windows Runtime WorkplaceSettings DLL	Microsoft® Windows® Operating System (6.3.9600.17415)	19968	C:\Windows\System32\en-US\
Microsoft.PowerShell.C...	Dynamic Link Library	Windows 8.1	88064	C:\Windows\System32\wbem\Performance\

Other Files Related to ntasn1.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 7	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8.1	6201	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 7	7504	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 8	7504	C:\Windows\L2Schemas\

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