Troubleshoot dxdiagn.dll Errors and Download File

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

dxdiagn.dll file Microsoft DirectX Diagnostic Tool. 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 dxdiagn.dll related errors on your device. You can also download dxdiagn.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.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP

File info

General information
Filename dxdiagn.dll
File extension DLL
Description Microsoft DirectX Diagnostic Tool
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
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.)

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

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



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


Problems related to dxdiagn.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 dxdiagn.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.

dxdiagn.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

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with dxdiagn.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.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to dxdiagn.dll file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. 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 dxdiagn.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

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 dxdiagn.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the dxdiagn.dll file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the dxdiagn.dll file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the dxdiagn.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 dxdiagn.dll file

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of dxdiagn.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\SysWOW64\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your dxdiagn.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 dxdiagn.dll
System Windows 10
File size 275456 bytes
Date 2017-03-18
File details
MD5 a48f37fc73b3c091dcd50e9b04faa863
SHA1 164062bed9a71e79aa388ff3c1b17d62d3b2ff82
SHA256 9e6482ddd693d98fa1f3a03187fdae019865019d36b9a9729de42bf7f478dc28
CRC32 30ca38c4
Example file location C:\Windows\System32\
Filename dxdiagn.dll
System Windows 8.1
File size 264192 bytes
Date 2014-11-21
File details
MD5 9cbdc0f240d4f1d1ec01176c4765e333
SHA1 522a75c384d3b0f51bd4eb2e2ca5b1d8b8409b68
SHA256 5f2904bc8d3b58afdcb207003a90812a61df84f0fdaee88ed0ca78dbf2cf0d10
CRC32 c88f6265
Example file location C:\Windows\System32\
Filename dxdiagn.dll
System Windows 8
File size 247296 bytes
Date 2012-07-26
File details
MD5 11074dabff3b930ea34dcd43831d7052
SHA1 31b24686173d53e22feaf4a84f9bb9eecd1d96e4
SHA256 c2dbcd4ecf744ef3515b06075c736f4e7e4183782083518113548eb3769e0117
CRC32 7309f627
Example file location 1: C:\Windows\System32\
Filename dxdiagn.dll
System Windows 7
File size 210432 bytes
Date -0001-11-30
File details
MD5 69c85737f4ca5634e7a19b818579d176
SHA1 be426fe5c629557d9485e5b57e0a4a45a2daf68c
SHA256 ec83e3b10c21628deca8efe54fda4d84e40e7df687ed164e9bf7ca35e2a5027f
CRC32 db0d6189
Example file location C:\Windows\SysWOW64\
Filename dxdiagn.dll
System Windows 7
File size 279552 bytes
Date 2010-11-21
File details
MD5 7c58defd1306691c43837cec18bc64a3
SHA1 61e164f45ca247c06c466cd42d993c78433df72a
SHA256 e8f45697fdc1a24ddeff823454e770cbdcfb77aa8829df6af5f25daa5e0f5e16
CRC32 3c1cd988
Example file location C:\Windows\SysWOW64\
Filename dxdiagn.dll
System Windows Vista
File size 195072 bytes
Date -0001-11-30
File details
MD5 76d5f7fb4fbc83e88b8321226ef3055d
SHA1 e0c97d2db8e7cf9e859f943518071aded161ee25
SHA256 09457bc27eb462da6f6855c75347d1ad2c69d947235fad9e3376f1cfb67c253f
CRC32 0fd6c817
Example file location ---
Filename dxdiagn.dll
System Windows Vista
File size 261632 bytes
Date 2008-01-21
File details
MD5 e83acf9ca3bc0549e6ba590f5f5775c5
SHA1 fa29427b1fbc2d63f8b970a5f45f703cb5ea7820
SHA256 8c63bd1dd45281d935c35aeea7f47d2079edf3e0bb891699f8a4286a39c28a23
CRC32 134d79b6
Example file location ---
Filename dxdiagn.dll
System Windows XP
File size 2113536 bytes
Date 2008-04-14
File details
MD5 57e51c6347165622c69d456b96b1eb46
SHA1 ad576a339dd82faaccde2eca41a201a788272175
SHA256 ca50a8f65866455e2ae899b0d8c0837d7c626dbd8c508fc2ae74dc2a6259595e
CRC32 75938762
Example file location ---