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msxml3.dll

Updated: Files Available: 110
Verified Metadata AI Analysis x86 (32 bit) x86-64 (64 bit) ARM64 ARM (Thumb 2)

Download and install msxml3.dll to fix missing or corrupted DLL errors.

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DLL Overview

Last Updated
Jan 12th, 2026
Filename
msxml3.dll
Company
Microsoft Corporation
Product
Microsoft XML Core Services
Description
MSXML 3.0
Architecture
x86 (32 bit) x86-64 (64 bit) ARM64 ARM (Thumb 2)
Metadata Consensus
78/110 Files 70.9%
Higher percentages indicate stronger agreement across versions. View available versions or browse repository metadata to compare differences between variants.

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About msxml3.dll

msxml3.dll is a DLL file (Dynamic Link Library) used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy.

Overview

What Is msxml3.dll?

msxml3.dll is a core component of Microsoft XML Core Services (MSXML) 3.0, a Windows library that provides XML parsing, XPath querying, XSLT transformations, and DOM/SAX APIs for legacy and modern applications.

MSXML 3.0 has been built into Windows for many years and is widely used by installers, enterprise applications, scripting engines, and legacy software that relies on Microsoft’s XML processing stack.


What msxml3.dll Does

msxml3.dll implements the XML parsing and processing engine for MSXML 3.0, including:

  • DOM (Document Object Model) XML loading, editing, and traversal
  • SAX (Simple API for XML) streaming XML parsing
  • XPath 1.0 query support
  • XSLT 1.0 transformations
  • Schema and validation utilities (depending on mode)
  • COM-based XML interfaces used by VBScript, JScript, and classic applications

Key COM classes exposed by this DLL include:

  • DOMDocument
  • DOMDocument30
  • SAXXMLReader
  • XSLTemplate

MSXML 3.0 remains widely supported for compatibility even though newer versions exist.


Where msxml3.dll Is Found

It is a built-in Windows component located in:

C:/Windows/System32/msxml3.dll
C:/Windows/SysWOW64/msxml3.dll   (for 32-bit components on 64-bit Windows)

MSXML 3.0 is serviced and updated through Windows Update.


Why Applications Need This DLL

Programs, scripts, and installers rely on msxml3.dll to:

  • Parse configuration files and XML metadata
  • Execute XSL transformations
  • Communicate using XML-based protocols
  • Load and manipulate XML documents via COM
  • Run legacy software written for MSXML 3.0

If the DLL is missing or corrupted, XML-dependent features or entire applications may fail to launch.


Common Errors Related to msxml3.dll

msxml3.dll was not found.

The program can't start because msxml3.dll is missing.

Class not registered: MSXML3.DLL.

XML parsing error: unable to load msxml3.dll.

These typically occur when:

  • System files have been removed or corrupted
  • MSXML components are improperly registered
  • A Windows update or system cleanup disrupted COM registration
  • 32-bit / 64-bit script hosts load the wrong version


How To Fix msxml3.dll Issues

1. Run System File Checker (SFC)

Repairs missing or corrupted MSXML engine files:

sfc /scannow

2. Repair the Windows Component Store (DISM)

If SFC cannot fix the issue:

DISM /Online /Cleanup-Image /RestoreHealth

3. Re-register MSXML 3.0

If COM registration was lost:

regsvr32 msxml3.dll

4. Install Pending Windows Updates

MSXML is updated as part of cumulative Windows patches.

5. Avoid replacing msxml3.dll manually when possible

System-managed DLLs must match exact Windows builds.


Manual Install Instructions

If you obtained a clean, verified copy of msxml3.dll from DLLme, you may restore it manually in cases where registration or repair is needed:

1. Copy the DLL to the correct system folder

64-bit: C:/Windows/System32/
32-bit support: C:/Windows/SysWOW64/

2. Register the DLL

regsvr32 msxml3.dll

3. Restart the Application or Script Host

COM XML engines load at runtime.

System repair through SFC/DISM remains the recommended method.


Summary

msxml3.dll is the XML parsing and processing engine from Microsoft XML Core Services (MSXML) 3.0. It provides DOM, SAX, XPath, and XSLT features used by many Windows applications, installers, and scripts.

Missing or corrupted copies should be repaired through Windows system tools or restored with a verified DLL when necessary.

File information is supported by Human Assisted Artificial Intelligence and should be used as a helpful tool. However, it is important to keep in mind that this information may not be up-to-date or entirely accurate.

Troubleshooting DLL Errors

Most errors involving msxml3.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common and reliable ways to fix these errors.

Windows DLL Error Examples

This application has failed to start because msxml3.dll was not found. Re-installing the application may fix this problem.
msxml3.dll Not Found.

Fixes and Solutions

The first step in resolving DLL errors is to completely uninstall the affected software and reinstall its latest version. We know this does not always solve the problem, which is why DLLme exists. If reinstalling the application does not help, or if you are unsure which app is causing the error, follow the steps below. These are the most common solutions for fixing msxml3.dll errors.

  • Repair Windows: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator (search for “PowerShell” in the Start menu, right-click it, and choose “Run as administrator”). This allows you to repair the Windows component store and run the System File Checker (SFC).

    Repair the Windows component store so SFC can pull clean files:

    DISM /Online /Cleanup-Image /RestoreHealth

    Scan all protected system files and automatically repair problems:

    sfc /scannow
  • Uninstall & Reinstall: On this DLL page, check the Company/Product section to identify the related app, then fully uninstall it. If you plan to continue using it, reinstall the latest version. Be sure to save or back up any important data before uninstalling. Windows or antivirus software may sometimes quarantine DLL files, especially if the DLL is unfamiliar or appears suspicious. Check your antivirus quarantine or logs to determine if this is the cause of your issue.
  • Download the DLL: Download the latest 32-bit or 64-bit version of the DLL directly from our repository using the download button above. Most users will need the 64-bit version, but if you are unsure, or if a 64-bit version is not available, you can install both the 32-bit and 64-bit DLLs. DLLme verifies DLLs that come from our admins, partners, and trusted affiliates. User-uploaded files may be verified later if a trusted source is confirmed.
  • Register the DLL: Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

    Register the DLL (you can also drag the DLL file into the window to automatically fill in its full path):

    regsvr32 "C:\path\to\msxml3.dll"

    If you are registering a 32-bit DLL on 64-bit Windows, use the 32-bit RegSvr32:

    C:\Windows\SysWOW64\regsvr32 "C:\path\to\msxml3.dll"

    Or open Windows Terminal/PowerShell in the DLL’s folder and run:

    regsvr32 msxml3.dll

How to Install msxml3.dll

To install msxml3.dll, place the DLL file in the appropriate Windows system folder or in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both.

On 64-bit versions of Windows, place 64-bit DLL files in:

C:\Windows\System32\msxml3.dll

Place 32-bit DLL files in:

C:\Windows\SysWOW64\msxml3.dll

Or place the DLL file next to the application’s .exe:

C:\path\to\exe\msxml3.dll

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