Fixing A43.dat Issues - How to Download and Repair

Last Updated: 07/02/2022
[Time Required for Reading: 3.5 minutes]

A43.dat, also known as a A43 Self-Extracting Archive file, was created by Acronis for the development of A43 Stub. DAT files fall under under the Win32 EXE (Executable application) file type category.

The first version of a43.dat was released for the Windows 10 Operating System on 06/22/2010 inside Acronis Disk Director Home 11. This file version is latest update offered from Acronis, according to our records.

Below, you find comprehensive file information, instructions for simple DAT file troubleshooting, and list of free a43.dat downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

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File Overview

General Information
File Name: a43.dat
File Extension: DAT file extension
Description: A43 Self-Extracting Archive
Object File Type: Executable application
File Operating System: Win32
MIME Type: application/octet-stream
User Popularity Rating:
Developer and Software Information
Software Developer: B. G. Miller
Software Program: A43 Stub
Legal Copyright: Copyright 2001-2006 B. G. Miller
File Details
Character Set: Windows, Latin1
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x90ec
Code Size: 31232

What are a43.dat Error Messages?

Dynamic Link Library a43.dat Errors

A43.dat is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like a43.dat, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like iscsicli.exe - to follow. These files were created so that multiple programs (eg. Acronis Disk Director Home) could share the same a43.dat file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DAT file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when a43.dat is attempted to be loaded either when Acronis Disk Director Home is starting up, or in some cases already running. Some of the most common a43.dat errors include:

Your a43.dat file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Acronis Disk Director Home), or deleted by a malware infection. Furthermore, a43.dat file corruption could be caused from a power outage when loading Acronis Disk Director Home, system crash while loading a43.dat, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix a43.dat 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 a43.dat 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 a43.dat error, please proceed to the Step 2 below.

Step 2: If recently installed Acronis Disk Director Home (or related software), uninstall then try reinstalling Acronis Disk Director Home software.

You can uninstall Acronis Disk Director Home 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 Acronis Disk Director Home 11 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Acronis Disk Director Home software.

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

Acronis Disk Director Home 11


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 a43.dat 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 a43.dat error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your a43.dat 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 a43.dat file version. We maintain a comprehensive database of 100% malware-free a43.dat files for every applicable version of Acronis Disk Director Home. 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 a43.dat Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Acronis Disk Director Home folder location:
    Windows 10: C:\Program Files (x86)\Common Files\Acronis\DiskDirector\WinPE\Files\
  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 a43.dat 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.

Download a43.dat Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying a43.dat to your appropriate Windows system directory. Acronis typically does not release Acronis Disk Director Home DAT 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 a43.dat and all other DAT files for Acronis Disk Director Home. An incorrectly installed DAT file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

Files Related to a43.dat

DAT Files Related to a43.dat

File Name Description Software Program (Version) File Size (bytes) File Location
9WZDNCRD29V9.dat Game Data Acronis Disk Director Home 11 470 C:\Windows\System32\config\systemprofile\AppDat...
StartUnifiedTileModelC... Game Data Acronis Disk Director Home 11 44426 C:\Users\Tester\AppData\Local\Packages\Microsof...
FontCache-S-1-5-21-391... Game Data Acronis Disk Director Home 11 8388608 C:\Windows\ServiceProfiles\LocalService\AppData...
ntuser.dat Game Data Acronis Disk Director Home 11 262144 C:\Windows\ServiceProfiles\LocalService\
9WZDNCRFJ364.dat Game Data Acronis Disk Director Home 11 460 C:\Windows\System32\config\systemprofile\AppDat...

Other Files Related to a43.dat

File Name Description Software Program (Version) File Size (bytes) File Location
diagwrn.xml Extensible Markup Language Acronis Disk Director Home 11 44683 C:\Windows\Panther\UnattendGC\
diagerr.xml Extensible Markup Language Acronis Disk Director Home 11 44109 C:\Windows\Panther\UnattendGC\
api-ms-win-core-synch-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 13160 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11624 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
mpio.sys MultiPath Support Bus-Driver Microsoft® Windows® Operating System (1.22.3790.2358) 93240 C:\Program Files (x86)\Common Files\Acronis\Dis...


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