mmsys.cpl Informations - Download and Fix

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

mmsys.cpl file Audio Control Panel. 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 mmsys.cpl related errors on your device. You can also download mmsys.cpl 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 mmsys.cpl
File extension CPL
Description Audio Control Panel
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 mmsys.cpl file. mmsys.cpl 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 mmsys.cpl file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to mmsys.cpl 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 mmsys.cpl 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.

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

The last solution is to manually download and replace mmsys.cpl 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 mmsys.cpl file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of mmsys.cpl 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 mmsys.cpl 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 mmsys.cpl
System Windows 10
File size 646144 bytes
Date 2017-03-18
File details
MD5 54860c7e5237e8629ac9e8c2e92a63ef
SHA1 83a5059fb2f6d451630bad001326f8705cce9edd
SHA256 ed6730e4f38454b7ddc19509c5f45c8d2c766537729fb8cfd0ca11b18aeb5901
CRC32 3ccfb9d5
Example file location C:\Windows\System32\
Filename mmsys.cpl
System Windows 8.1
File size 763392 bytes
Date 2014-11-21
File details
MD5 0163c715c9515ca8f11d7b7443d3e944
SHA1 b25e637ce43d9817846ed674b69fec23c8032e97
SHA256 fb520cf38b95d43eb4ad8f2a8ff3f365e7f629abbec0620c081f81fad0f93d85
CRC32 d1c41d25
Example file location C:\Windows\System32\
Filename mmsys.cpl
System Windows 8
File size 741376 bytes
Date 2012-07-26
File details
MD5 6199cb19b024f3b12fc6af9f3a16dc2e
SHA1 1b66e1ee1d6cb193400bd5856c0ee297238a7b09
SHA256 7317e1b57e0c2de4a909f3ce5036404563706fe21a2dceb17a8058edeb6bed2f
CRC32 15f3e78e
Example file location 1: C:\Windows\System32\
Filename mmsys.cpl
System Windows 7
File size 905216 bytes
Date -0001-11-30
File details
MD5 53e054880adbb856ece6eb10edbb8a32
SHA1 06a51f64a0eaa6678a8ffcb519e7e02fbd9e2c33
SHA256 b1e9e35adff4a7e3dda61bc4b3eb1f8c880ded3c8ab3c25cba081664a3cdaf42
CRC32 8d04bb87
Example file location C:\Windows\SysWOW64\
Filename mmsys.cpl
System Windows 7
File size 850944 bytes
Date 2010-11-21
File details
MD5 649f5f47ea85c08aee9353ceef810233
SHA1 ea5f9f24ee1689b5bc3fbed19663fe99a3588a05
SHA256 48e947832e4f5512d41eb6bab950cad6f86f026ef8641db410d25cbea8c71ae1
CRC32 6aa3cbd4
Example file location C:\Windows\SysWOW64\
Filename mmsys.cpl
System Windows Vista
File size 1102848 bytes
Date -0001-11-30
File details
MD5 69405254e704895f4f519422818d35b6
SHA1 bff49cc7db4fa2cd55988d363657e47ae30756dd
SHA256 53c4804da9b5a233c2549ea12749f5ad5da1b132ff761e9ab4b43d134861ef3d
CRC32 c37b672b
Example file location ---
Filename mmsys.cpl
System Windows Vista
File size 1060352 bytes
Date 2009-04-11
File details
MD5 78943dd269ad01ebc65fc8f78e3df8dc
SHA1 5b0074ddfbb5fdf65576bc8db8a6a734a92b2f65
SHA256 60829ed26d034705a231b2bdedaf15f1942862cda7d680b26c739de1a577240b
CRC32 8820e1d8
Example file location ---
Filename mmsys.cpl
System Windows XP
File size 618496 bytes
Date 2008-04-14
File details
MD5 0f93f0a941dc94b83be820f51174695d
SHA1 58c68ad8566cb74eb9fde01a47b03cf26ed881fc
SHA256 bb9b488afc5eb0a7137a03ab0757c48261581797b8ee6a9c889c01f13eb3dfaf
CRC32 4227ddc2
Example file location ---