Fix, Download, and Update BNUpdate.exe

Last Updated: 11/27/2023
[Time Required for Reading: 3.5 minutes]

BNUpdate.exe is considered a type of bnupdate file. It is most-commonly used in Blizzard Update Program developed by Blizzard Entertainment Inc.. It uses the EXE file extension and is considered a Win32 EXE (Executable application) file.

BNUpdate.exe was first developed on 11/07/2003 for the Windows 10 Operating System in Warcraft III: Reign of Chaos demo. This file release marks the latest and most updated version from Blizzard Entertainment Inc..

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

File Analysis Provided by Jason Geater (Author)


Recommended Download: Fix BNUpdate.exe / Warcraft III: Reign of Chaos-related registry issues with WinThruster.

Compatible with Windows 11, 10, 8, 7, Vista, XP and 2000

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File Overview


General Information
File Name: BNUpdate.exe
File Extension: EXE file extension
Description: bnupdate
Object File Type: Executable application
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Blizzard Entertainment
Software Program: Blizzard Update Program
Legal Copyright: Copyright © 2000-2002
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x84a6
Code Size: 118784


What are BNUpdate.exe Error Messages?


BNUpdate.exe Runtime Errors

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

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

Some of the most common BNUpdate.exe errors include:

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


The program can’t start because BNUpdate.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 BNUpdate.exe error is key to properly resolving these errors. Although most of these EXE errors affecting BNUpdate.exe will happen during startup, occasionally you will encounter a runtime error while using Blizzard Update Program. This can occur due to poor programming on behalf of Blizzard Entertainment, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of BNUpdate.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.



How to Fix BNUpdate.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 BNUpdate.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 BNUpdate.exe error, please proceed to the Step 2 below.

Step 2: If recently installed Warcraft III: Reign of Chaos (or related software), uninstall then try reinstalling Warcraft III: Reign of Chaos software.

You can uninstall Warcraft III: Reign of Chaos 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 Warcraft III: Reign of Chaos demo and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Warcraft III: Reign of Chaos software.

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

Warcraft III: Reign of Chaos demo

Blizzard Entertainment Inc.

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 BNUpdate.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 BNUpdate.exe 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 BNUpdate.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 BNUpdate.exe file version. We maintain a comprehensive database of 100% malware-free BNUpdate.exe files for every applicable version of Warcraft III: Reign of Chaos. 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 BNUpdate.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Warcraft III: Reign of Chaos folder location:
    Windows 10: C:\Program Files (x86)\Warcraft III Demo\
  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 BNUpdate.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.



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


CAUTION : We strongly advise against downloading and copying BNUpdate.exe to your appropriate Windows system directory. Blizzard Entertainment Inc. typically does not release Warcraft III: Reign of Chaos 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 BNUpdate.exe and all other EXE files for Warcraft III: Reign of Chaos. 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


Files Related to BNUpdate.exe


EXE Files Related to BNUpdate.exe

File Name Description Software Program (Version) File Size (bytes) File Location
FileCoAuth.exe Microsoft OneDriveFile Co-Authoring Executable Microsoft OneDrive (19.192.0926.0012) 506728 C:\Users\Tester\AppData\Local\Microsoft\Windows\
WinStore.App.exe Windows Executable Warcraft III: Reign of Chaos demo 19456 C:\Windows\System32\spp\store\2.0\cache\
Music.UI.exe Music Application Entertainment Platform (10.19072.141100000-19072) 23313408 C:\Windows\Panther\
MpSigStub.exe Microsoft Malware Protection Signature Update Stub Microsoft Malware Protection (1.1.16500.1) 748816 C:\Windows\inf\
Warcraft III Demo.exe Warcraft III Demo Warcraft III Demo (1, 0, 0, 1) 274432 C:\Program Files\WindowsApps\Microsoft.Microsof...

Other Files Related to BNUpdate.exe

File Name Description Software Program (Version) File Size (bytes) File Location
setuperr.log Log Warcraft III: Reign of Chaos demo 5179 C:\Windows\Panther\NewOs\Panther\
setupapi.dev.log Log Warcraft III: Reign of Chaos demo 684126 C:\Windows\inf\
WmiApRpl.h C/C++/Objective-C Header Warcraft III: Reign of Chaos demo 3444 C:\Windows\System32\wbem\Performance\
api-ms-win-core-heap-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-sysinf... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 12136 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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