Microsoft Windows DLL dot3hc.dll

How to Download and Fix Dot3hc.dll DLL Errors

Last Updated: 11/27/2023
[Time to Read Article: 5 minutes]

dot3hc.dll, also known as a Dot3 Helper Class file, was created by Microsoft for the development of Microsoft® Windows® Operating System. DLL files fall under under the Win32 DLL (Dynamic link library) file type category.

dot3hc.dll was first released for Windows 7 Operating System on 07/22/2009 with Windows 7. The most recent release for Windows 10 launched on 07/29/2015 [version 10.0.15063.0 (WinBuild.160101.0800) release]. dot3hc.dll is bundled with the software package in Windows 10, Windows 8.1, and Windows 8.

Below, you find comprehensive file information, instructions for simple DLL file troubleshooting, and list of free dot3hc.dll downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	dot3hc.dll
File Extension:	DLL file extension
Description:	Dot3 Helper Class
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:	0xa0b0
Code Size:	44544

View Other dot3hc.dll Information

File Info	Description
File Size:	54 kB
File Modification Date/Time:	2017:03:18 18:18:35+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:	2070:01:25 02:01:51+00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	44544
Initialized Data Size:	11264
Uninitialized Data Size:	0
Entry Point:	0xa0b0
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:	Dot3 Helper Class
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	dot3HC.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	dot3HC.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 dot3hc.dll Error Messages?

Dynamic Link Library dot3hc.dll Errors

dot3hc.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like dot3hc.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like sapisvr.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same dot3hc.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 dot3hc.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common dot3hc.dll errors include:

Access Violation at address - dot3hc.dll.
dot3hc.dll could not be found.
Cannot find C:\Windows\System32\dot3hc.dll.
Cannot register dot3hc.dll.
Cannot start Windows. A required component is missing: dot3hc.dll. Please install Windows again.
Failed to load dot3hc.dll.
The application has failed to start because dot3hc.dll was not found.
The file dot3hc.dll is missing or corrupt.
This application failed to start because dot3hc.dll was not found. Re-installing the application may fix this problem.

Your dot3hc.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, dot3hc.dll file corruption could be caused from a power outage when loading Windows, system crash while loading dot3hc.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 dot3hc.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 dot3hc.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 dot3hc.dll error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing dot3hc.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 dot3hc.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 dot3hc.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 dot3hc.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 dot3hc.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 dot3hc.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 dot3hc.dll file version. We maintain a comprehensive database of 100% malware-free dot3hc.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 dot3hc.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 7: C:\Windows\System32\
Windows 7: C:\Windows\SysWOW64\
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 dot3hc.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 dot3hc.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying dot3hc.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 dot3hc.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

dot3hc.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:	55808
File Date:	03/18/2017
MD5 Checksum:	64211eb58bfa041274699a17e5a94fba
SHA1 Checksum:	8f60930f0d0f5709e1da9f17b7cec8208e77d42a
SHA256 Checksum:	b9dfce19ade63182df0ebfef7592d7cb40e265ca4dbc057383d56bcc8f6daec7
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	11264
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

dot3hc.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:	54272
File Date:	11/21/2014
MD5 Checksum:	560ae573e47c819ffbee3954f5f2e04e
SHA1 Checksum:	695d74d23bc15bf6820fb61a65ed2d85963b0948
SHA256 Checksum:	7dc108161e8a16f71e4d8160966be5d3064c3260c6e0dae85cc7f2a623ad780b
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	10752
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

dot3hc.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:	52224
File Date:	07/26/2012
MD5 Checksum:	ed41e56a74c58d67203ecd3c4c418829
SHA1 Checksum:	1d4e665ea1d66a106426e994c7a05dbd985430e0
SHA256 Checksum:	21a1572f89455ecf3a0f62da1fc072f9e0bbd5613b3438e1bec44094193422f7
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	12288
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

Windows 7

File Name

Software Version

File Version

Architecture

dot3hc.dll

6.1.7600.16385

6.1.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7600.16385
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
File Size:	69632
File Date:	07/14/2009
MD5 Checksum:	cc100d183bbeff4491155e3a88dd586d
SHA1 Checksum:	047761efa4737da6a71011dbc28e6a4460c757d6
SHA256 Checksum:	5b8e5cd8a5c88c8f61e12148eb189ae02f137cc880d6264696bdc4b4c64540f5
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	10752
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.1
File Modification Date/Time:	07/14/2009

dot3hc.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	55296
MD5 Checksum:	3ef520a077afa7acc076fb3e0fe42ff5
SHA1 Checksum:	d9b75851ca80abef408f3145ab701d123ac702fa
SHA256 Checksum:	2ae399e8e20118dafb5588a2af9541e58cba27452dd2796ae8d8a5fb981599cd
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

File Version, System, and Machine Information
There is no information available.

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spra0426.dll	Service Pack 1 Messages	Microsoft® Windows® Operating System (5.1.2600.5512)	188928	C:\Windows\System32\winevt\Logs\
cngcredui.dll	Microsoft CNG CredUI Provider	Microsoft® Windows® Operating System (6.3.9600.17415)	101376	C:\Windows\System32\

Other Files Related to dot3hc.dll

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OneX_v1.xsd	XML Schema Definition	Windows 8.1	5957	C:\Windows\L2Schemas\
OneX_v1.xsd	XML Schema Definition	Windows XP	5957	C:\Windows\L2Schemas\
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