AuxiliaryDisplayCpl.dll Informations - Download and Fix

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

AuxiliaryDisplayCpl.dll file Microsoft Windows SideShow 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 AuxiliaryDisplayCpl.dll related errors on your device. You can also download AuxiliaryDisplayCpl.dll file compatible with Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista

File info

General information
Filename AuxiliaryDisplayCpl.dll
File extension DLL
Description Microsoft Windows SideShow 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.)
Fix File Errors

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

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



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


Problems related to AuxiliaryDisplayCpl.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 AuxiliaryDisplayCpl.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of AuxiliaryDisplayCpl.dll file example directory paths.

  • Windows 8: C:\Windows\System32\
  • Windows 7: C:\Windows\System32\
  • Windows 7: C:\Windows\System32\
  • Windows Vista: C:\Windows\System32\
  • Windows Vista: C:\Windows\System32\

If the steps did not solve your AuxiliaryDisplayCpl.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 AuxiliaryDisplayCpl.dll
System Windows 8
File size 726016 bytes
Date 2012-07-26
File details
MD5 cfb7c58d5e3b70a340d438b9ed1aea88
SHA1 ab054e9ae9b938355574ad5d4ac9810bc0aa66f4
SHA256 41d277bd4ebc8af70210deffd3295e328060b2220c2bce1952fb96a92008f35c
CRC32 e159f659
Example file location C:\Windows\System32\
Filename AuxiliaryDisplayCpl.dll
System Windows 7
File size 726528 bytes
Date 2010-11-21
File details
MD5 8956ba8e83f83ed3b54b292ceb42f219
SHA1 1e82e6ef7130e5eebadc82be7e3d5cf486a1f8ff
SHA256 27036f757c513e323162d70db7bff42eb7638ed86c6200db5a15b4406e637023
CRC32 8ec7a5b9
Example file location C:\Windows\System32\
Filename AuxiliaryDisplayCpl.dll
System Windows 7
File size 665600 bytes
Date -0001-11-30
File details
MD5 fca71f6230075cd687189ac29ab06945
SHA1 12e767e1ed9027f8f34f1ab8231bf77f765f79ba
SHA256 be1e931d0e6a38b2325d98c3a5d7fab8f5471392e746da25cdc95106738f8943
CRC32 e446df28
Example file location C:\Windows\System32\
Filename AuxiliaryDisplayCpl.dll
System Windows Vista
File size 1418752 bytes
Date 2009-04-11
File details
MD5 4e7d270cf881377567d2090b5aca077f
SHA1 ee3b05bf798f07ab80020a1165ff7cd22d06d506
SHA256 593e0e815c1570f7292828fe670df0c14af8e4ce44c4d3551b51e48553436f23
CRC32 3d58f391
Example file location C:\Windows\System32\
Filename AuxiliaryDisplayCpl.dll
System Windows Vista
File size 1216000 bytes
Date -0001-11-30
File details
MD5 79b0ec7806b563475a211c5b0f9a4b9c
SHA1 fc47aca774c29d94c50984122a7606e8ca9e468d
SHA256 bb42e4ab39b8ae58a5e8051ca0c5cb6df9b1dbc037bbbbf19f92993c1a57f161
CRC32 0b637388
Example file location C:\Windows\System32\