aclui.dll Troubleshoot and Download

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

aclui.dll file Security Descriptor Editor. 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 aclui.dll related errors on your device. You can also download aclui.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 aclui.dll
File extension DLL
Description Security Descriptor Editor
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 aclui.dll file. aclui.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 aclui.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to aclui.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 aclui.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of aclui.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\System32\
  • Windows 7: C:\Windows\System32\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your aclui.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 aclui.dll
System Windows 10
File size 5386240 bytes
Date 2017-03-18
File details
MD5 52f6fc4effcab1540f13324ea27288f4
SHA1 07e4cdd2a122fb79cbcc379cda8e6067ca8c0cd4
SHA256 aebdea05b9f682f4395e66e2f74f17a14acbee89efea9887c57eee6e58ce4d20
CRC32 5032f813
Example file location C:\Windows\System32\
Filename aclui.dll
System Windows 8.1
File size 902144 bytes
Date 2014-11-21
File details
MD5 e521381f297535ddb81055184c07943f
SHA1 3e59f6b6e9ccf455607d9ba878cabe0a78d8d989
SHA256 ca2fa0ac03643c03d9bdf6cb51d79341286e8aa17157a8b6ae66e906043ce866
CRC32 51da8e78
Example file location C:\Windows\System32\
Filename aclui.dll
System Windows 8
File size 864256 bytes
Date 2012-07-26
File details
MD5 b99914d95b1cc5fdea5b44c9a861e702
SHA1 5cbdccfdea44102d30a03e64b2804dd22c6c10d8
SHA256 bd36db383b2ef7609439666f4ad56de658e6ad338e18e6e462a422d6a322ec89
CRC32 a2b0eb78
Example file location 1: C:\Windows\System32\
Filename aclui.dll
System Windows 7
File size 154112 bytes
Date 2009-07-14
File details
MD5 489bfbbb3950aefa5a40b7b8bfd76430
SHA1 bacb35c0742ace34be4a0d29f71ce93fe2304aed
SHA256 c4fd793243ba85e13c66b997199ecc0fee195ec6496cc8b7176be0de1ef88bda
CRC32 b5cef56e
Example file location C:\Windows\System32\
Filename aclui.dll
System Windows 7
File size 125440 bytes
Date -0001-11-30
File details
MD5 dab5808e0c26740577ae67878a87136e
SHA1 7d5d683cc0ba2abb1b6b395576ca30629e11928c
SHA256 780f077d9818776ce53055a06e9abb578816c15442fbcf21052e6784bc6aeb1a
CRC32 8979507e
Example file location C:\Windows\System32\
Filename aclui.dll
System Windows Vista
File size 127488 bytes
Date -0001-11-30
File details
MD5 09c91e1f199c53e1114396b59b3b4d9e
SHA1 39c9353ac138f89ac9e83cf9d079dac5e5ad0ead
SHA256 c1a078e7fefeeb376d51e3f3712177658d69d5bfa13b72496679708aef73caef
CRC32 000f4bd3
Example file location ---
Filename aclui.dll
System Windows Vista
File size 156672 bytes
Date 2008-01-21
File details
MD5 4f5cdba14ce9fbd064ea29160b724d65
SHA1 a8cb0d9b695566c3cbe273cbd590a73cbbc39293
SHA256 a958c1db4d66d08f344d0ac6d1c3acb520c0366927715e8eec99c1187596250e
CRC32 e4ca1792
Example file location ---
Filename aclui.dll
System Windows XP
File size 115712 bytes
Date 2008-04-14
File details
MD5 96a0066ab9872d3575575a463c53ff6c
SHA1 1ce6e49dfa51fbe48a3c84abf995185d0bc2709a
SHA256 939c2c4d5043b4a9a4d531b072f4344f0b84fa1d7840b810344b2773eb420cae
CRC32 9814e8ef
Example file location ---