How to Download, Fix, and Update D3DCompiler_40.dll

Last Updated: 11/27/2023
[Time Needed for Reading: ~4-6 minutes]

DLL files such as D3DCompiler_40.dll are categorized as Win64 DLL (Dynamic link library) files. As a Direct3D HLSL Compiler file, it was created for use in Microsoft® DirectX for Windows® by Microsoft.

D3DCompiler_40.dll was first released in the Windows 10 Operating System on 04/18/2011 with Microsoft DirectX Redistributable (June 2010) 9.29.1974. This file release marks the latest and most updated version from Microsoft.

This article discusses complete file details, DLL file troubleshooting instructions for problems with D3DCompiler_40.dll, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: D3DCompiler_40.dll
File Extension: DLL file extension
Description: Direct3D HLSL Compiler
Object File Type: Dynamic link library
File Operating System: Windows 16-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Microsoft Corporation
Software Program: Microsoft® DirectX for Windows®
Legal Copyright: Copyright © Microsoft Corp. 1994-2007
File Details
Character Set: Windows, Latin1
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x30003f
Entry Point: 0x252498
Code Size: 2506240


What are D3DCompiler_40.dll Error Messages?


Dynamic Link Library D3DCompiler_40.dll Errors

D3DCompiler_40.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like D3DCompiler_40.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like OneDriveSetup.exe - to follow. These files were created so that multiple programs (eg. Microsoft DirectX Redistributable (June 2010)) could share the same D3DCompiler_40.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 D3DCompiler_40.dll is attempted to be loaded either when Microsoft DirectX Redistributable (June 2010) is starting up, or in some cases already running. Some of the most common D3DCompiler_40.dll errors include:

Your D3DCompiler_40.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Microsoft DirectX Redistributable (June 2010)), or deleted by a malware infection. Furthermore, D3DCompiler_40.dll file corruption could be caused from a power outage when loading Microsoft DirectX Redistributable (June 2010), system crash while loading D3DCompiler_40.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.



How to Fix D3DCompiler_40.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 D3DCompiler_40.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):

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

If the Step 1 fails to resolve the D3DCompiler_40.dll error, please proceed to the Step 2 below.

Step 2: If recently installed Microsoft DirectX Redistributable (June 2010) (or related software), uninstall then try reinstalling Microsoft DirectX Redistributable (June 2010) software.

You can uninstall Microsoft DirectX Redistributable (June 2010) software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Microsoft DirectX Redistributable (June 2010) 9.29.1974 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Microsoft DirectX Redistributable (June 2010) software.

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

Microsoft DirectX Redistributable (June 2010) 9.29.1974

Microsoft Corporation

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 D3DCompiler_40.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

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

If Windows Update failed to resolve the D3DCompiler_40.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your D3DCompiler_40.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 D3DCompiler_40.dll file version. We maintain a comprehensive database of 100% malware-free D3DCompiler_40.dll files for every applicable version of Microsoft DirectX Redistributable (June 2010). Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download D3DCompiler_40.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Microsoft DirectX Redistributable (June 2010) folder location:
    Windows 10: C:\Windows\System32\
    Windows 10: C:\Windows\SysWOW64\
  4. 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 D3DCompiler_40.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.



Download D3DCompiler_40.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying D3DCompiler_40.dll to your appropriate Windows system directory. Microsoft typically does not release Microsoft DirectX Redistributable (June 2010) 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 D3DCompiler_40.dll and all other DLL files for Microsoft DirectX Redistributable (June 2010). 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


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DLL Files Related to D3DCompiler_40.dll

File Name Description Software Program (Version) File Size (bytes) File Location
StoreExperienceHost.dll Dynamic Link Library Microsoft DirectX Redistributable (June 2010) 9.29.1974 19870720 C:\Program Files\Common Files\Microsoft Shared\...
api-ms-win-core-synch-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 18560 C:\Windows\System32\LogFiles\WMI\RtBackup\
d3dx9_27.dll Dynamic Link Library Microsoft® DirectX for Windows® (9.08.299.0000) 3807440 C:\Windows\System32\winevt\Logs\
xactengine2_2.dll XACT Engine API Microsoft® DirectX for Windows® (9.13.644.0000) 230168 C:\Windows\System32\winevt\Logs\
d3dx11_43.dll Direct3D 10.1 Extensions Microsoft® DirectX for Windows® (9.29.952.3111) 248672 C:\Windows\System32\winevt\Logs\

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OneX_v1.xsd XML Schema Definition Windows XP 5957 C:\Windows\L2Schemas\
WWAN_profile_v1.xsd XML Schema Definition Microsoft Office Access 2010 14 6201 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...
WLANAP_profile_v1.xsd XML Schema Definition Windows 10 7548 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 7 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 8.1 16142 C:\Windows\L2Schemas\


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