dmcompos.dll Informations - Download and Fix

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

dmcompos.dll file Microsoft DirectMusic Composer. 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 dmcompos.dll related errors on your device. You can also download dmcompos.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, 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 Vista, Windows XP

File info

General information
Filename dmcompos.dll
File extension DLL
Description Microsoft DirectMusic Composer
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 dmcompos.dll file. dmcompos.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 dmcompos.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to dmcompos.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 dmcompos.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.

dmcompos.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 dmcompos.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 dmcompos.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 dmcompos.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 dmcompos.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the dmcompos.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 dmcompos.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 dmcompos.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 dmcompos.dll file

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

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

If the steps did not solve your dmcompos.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 dmcompos.dll
System Windows 10
File size 74752 bytes
Date 2017-03-18
File details
MD5 8d7fa7ce67b8246d0a5d4afc1fa217ae
SHA1 8b7407a136de8c1788c9486474214da7ee72eca9
SHA256 c8b7cfd9e2bfcf333cb2a1ae34e310e01a43aff1aa7a7dfef8d7f6709069a9d0
CRC32 7403389b
Example file location C:\Windows\System32\
Filename dmcompos.dll
System Windows 8.1
File size 75776 bytes
Date 2014-11-21
File details
MD5 499c953b27551a916f4298bbfdbe3677
SHA1 cd86267d5582d3112fe72b06dfe7175365022268
SHA256 ae62329b21c4a61e3728d54051d43042f41d98b74c1ebe05375afe8b7992c94f
CRC32 822ba457
Example file location C:\Windows\System32\
Filename dmcompos.dll
System Windows 8
File size 65024 bytes
Date 2012-07-26
File details
MD5 a984d4e3ef85ac048245c4f71d352034
SHA1 4a89ba0a59f1fd6c5e464cc0fd37faedef528a44
SHA256 4f3d824623c82b275c8163bba7dd369a73e08ca69d2278d91a4c0dce19db3a67
CRC32 b11562c8
Example file location 1: C:\Windows\System32\
Filename dmcompos.dll
System Windows 7
File size 63488 bytes
Date -0001-11-30
File details
MD5 8bdea597ede65570e72252301610f666
SHA1 beb01c4842a81591d949344178954ac59825d0df
SHA256 8cd5bae4bd2ce63493e94d1e392cbb18d8f8dee448017de6a8129a079cbc11f0
CRC32 26085efa
Example file location C:\Windows\SysWOW64\
Filename dmcompos.dll
System Windows Vista
File size 62976 bytes
Date -0001-11-30
File details
MD5 4e7674d55ad0f4ec611cccfc87ee8489
SHA1 582d9708d2bc6150ae361ec3818809e6ff61cd52
SHA256 a7225514a2ee8ae17814e16916dc3401fae93f8e725ef014aeed33844181ac79
CRC32 6e26bad8
Example file location C:\Windows\SysWOW64\
Filename dmcompos.dll
System Windows XP
File size 61440 bytes
Date 2008-04-14
File details
MD5 0a1a3bb6565d1c73e0b6aa070c7fda45
SHA1 58eb719a08808135fe769bbfcda33bd14f62b437
SHA256 0a6cfc9935b31b9557fa5532613da6a069d48744de406a432e015424343dcbe6
CRC32 48687295
Example file location ---