Open Source UltraVNC EXE MSLogonACL.exe

Troubleshoot MSLogonACL.exe Issues (Free Download)

Last Updated: 11/28/2023
[Average Read Time: 4.5 minutes]

MSLogonACL.exe, also known as a MSLogonACL file, was created by Open Source for the development of UltraVNC MSLogonACL. EXE files fall under under the Win32 EXE (Executable application) file type category.

The initial introduction of MSLogonACL.exe released in UltraVNC 1.2.2.4 was for Windows 10 on 04/11/2019. This is the most recent release date from Open Source, according to our records.

Continue reading below to discover detailed file information, EXE file troubleshooting, and free downloads of several versions of MSLogonACL.exe.

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File Overview


General Information ✻
File Name: MSLogonACL.exe
File Extension: EXE file extension
Description: MSLogonACL
Object File Type: Executable application
Comments: Imports/exports ACL for UltraVNC's MS-Logon II
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: UltraVNC
Software Program: UltraVNC MSLogonACL
Legal Copyright: Copyright © 2002-2005 UltraVNC team members
File Details
Character Set: Unicode
Language Code: Neutral
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x4447
Code Size: 74240
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What are MSLogonACL.exe Error Messages?


MSLogonACL.exe Runtime Errors

Runtime errors are UltraVNC errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when MSLogonACL.exe is attempted to be loaded either when UltraVNC is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using UltraVNC.

In most cases, MSLogonACL.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these MSLogonACL.exe error messages mean that UltraVNC was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, UltraVNC will be unable to start without resolving these errors.

Some of the most common MSLogonACL.exe errors include:

  • MSLogonACL.exe - Bad Image.
  • MSLogonACL.exe Application Error.
  • MSLogonACL.exe could not be found.
  • MSLogonACL.exe could not be installed.
  • MSLogonACL.exe could not be launched. Class not registered.
  • MSLogonACL.exe could not be started.
  • MSLogonACL.exe failed to initialize properly.
  • MSLogonACL.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  • MSLogonACL.exe is not a valid Win32 application.
  • MSLogonACL.exe is not running.
  • Cannot find MSLogonACL.exe.
  • Error starting program: MSLogonACL.exe.
  • Faulting Application Path: MSLogonACL.exe.
  • The file MSLogonACL.exe is missing or corrupt.
  • Windows failed to start - MSLogonACL.exe.
System Error


The program can’t start because MSLogonACL.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the MSLogonACL.exe error is key to properly resolving these errors. Although most of these EXE errors affecting MSLogonACL.exe will happen during startup, occasionally you will encounter a runtime error while using UltraVNC MSLogonACL. This can occur due to poor programming on behalf of UltraVNC, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of MSLogonACL.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix MSLogonACL.exe Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your MSLogonACL.exe issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the MSLogonACL.exe error, please proceed to the Step 2 below.

Step 2: If recently installed UltraVNC (or related software), uninstall then try reinstalling UltraVNC software.

You can uninstall UltraVNC software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for UltraVNC 1.2.2.4 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall UltraVNC software.

If this Step 2 fails as well, please proceed to the Step 3 below.

UltraVNC 1.2.2.4

Open Source

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many MSLogonACL.exe error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the MSLogonACL.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your MSLogonACL.exe File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate MSLogonACL.exe file version. We maintain a comprehensive database of 100% malware-free MSLogonACL.exe files for every applicable version of UltraVNC. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download MSLogonACL.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate UltraVNC folder location:
    Windows 10: C:\Program Files (x86)\uvnc bvba\UltraVNC\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve MSLogonACL.exe problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download MSLogonACL.exe Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying MSLogonACL.exe to your appropriate Windows system directory. Open Source typically does not release UltraVNC EXE files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing MSLogonACL.exe and all other EXE files for UltraVNC. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
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Files Related to MSLogonACL.exe


EXE Files Related to MSLogonACL.exe

File Name Description Software Program (Version) File Size (bytes) File Location
testauth.exe MS-Logon I for UltraVNC UltraVNC testauth (1.0.90.0) 57136 C:\Windows\inf\
UVNC_Launch.exe UVNC Console UVNC Console (1.0.0.5) 938800 C:\Windows\System32\DriverStore\FileRepository\...
FileCoAuth.exe Microsoft OneDriveFile Co-Authoring Executable Microsoft OneDrive (19.222.1110.0006) 506216 C:\Users\Tester\AppData\Local\Microsoft\Windows\
MSLogonACL.exe MSLogonACL UltraVNC MSLogonACL (1.0.90.0) 105776 C:\Windows\System32\DriverStore\FileRepository\...
GetHelp.exe Windows Executable UltraVNC 1.2.2.4 18432 C:\Program Files\Common Files\Microsoft Shared\...

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CBS.log Log ClamWin 0.98.7 971509 C:\Windows\Logs\CBS\
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CBS.log Log MAME 0.211b 1153002 C:\Windows\Logs\CBS\
setuperr.log Log HandBrake 1.2.2 762 C:\Windows\Logs\DPX\
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