How to Download Instmsiw.exe and Fix EXE Error Messages

Last Updated: 11/26/2023
[Time to Read: ~3-5 minutes]

instmsiw.exe, also known as a Installer for the Windows Installer file, was created by Liquid Entertainment for the development of Windows Installer - Unicode. EXE files fall under under the Win32 EXE (Executable application) file type category.

The initial introduction of instmsiw.exe released in Halo: Combat Evolved (not specified) was for Windows 10 on 10/17/2003. The most recent release for Battle Realms demo launched on 10/23/2003 [version 1.20.1827.0 release].

Below, you find comprehensive file information, instructions for simple EXE file troubleshooting, and list of free instmsiw.exe downloads for each available file version.

File Analysis Provided by Jason Geater (Author)


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

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File Overview


General Information
File Name: instmsiw.exe
File Extension: EXE file extension
Description: Installer for the Windows Installer
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: Microsoft Corporation
Software Program: Windows Installer - Unicode
Legal Copyright: Copyright (c) Microsoft Corp. 1999
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x273d
Code Size: 36864


What are instmsiw.exe Error Messages?


instmsiw.exe Runtime Errors

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

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

Some of the most common instmsiw.exe errors include:

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


The program can’t start because instmsiw.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 instmsiw.exe error is key to properly resolving these errors. Although most of these EXE errors affecting instmsiw.exe will happen during startup, occasionally you will encounter a runtime error while using Windows Installer - Unicode. This can occur due to poor programming on behalf of Microsoft Corporation, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of instmsiw.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 instmsiw.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 instmsiw.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 instmsiw.exe error, please proceed to the Step 2 below.

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

You can uninstall Battle Realms 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 Battle Realms demo and click "Uninstall"
  5. Follow the prompts for uninstallation.

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

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

Battle Realms demo

Liquid Entertainment

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 instmsiw.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 instmsiw.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 instmsiw.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 instmsiw.exe file version. We maintain a comprehensive database of 100% malware-free instmsiw.exe files for every applicable version of Battle Realms. 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 instmsiw.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Battle Realms folder location:
    Windows 10: C:\Users\Tester\Downloads\brdemo\DISK1 - Battle Realms Demo (0.99)\
    Windows 10: C:\Program Files (x86)\Microsoft Games\Halo Custom Edition\redist\
    Windows 10: C:\Program Files (x86)\Microsoft Games\Halo Trial\redist\
  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 instmsiw.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 instmsiw.exe Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying instmsiw.exe to your appropriate Windows system directory. Liquid Entertainment typically does not release Battle Realms 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 instmsiw.exe and all other EXE files for Battle Realms. 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 instmsiw.exe


EXE Files Related to instmsiw.exe

File Name Description Software Program (Version) File Size (bytes) File Location
Setup.exe Setup Launcher InstallShield® (2.03) 102400 C:\WINDOWS\Tasks\
OneDriveUpdaterService... Updater Service Microsoft OneDrive (19.192.0926.0012) 2487144 C:\Users\Tester\AppData\Local\
Music.UI.exe Music Application Entertainment Platform (10.19101.107100000-19101) 23313408 C:\Windows\Panther\
OneDriveSetup.exe Microsoft OneDrive (32 bit) Setup Microsoft OneDrive (19.192.0926.0012) 35086184 C:\Windows\Microsoft.NET\Framework\v4.0.30319\
instmsiw.exe Installer for the Windows Installer Windows Installer - Unicode (1.20.1827.0) 1526275 C:\Windows\System32\winevt\Logs\

Other Files Related to instmsiw.exe

File Name Description Software Program (Version) File Size (bytes) File Location
SA.DAT Game Data Battle Realms demo 6 C:\WINDOWS\Tasks\
diagwrn.xml Extensible Markup Language Battle Realms demo 5718 C:\Windows\System32\Sysprep\Panther\
diagwrn.xml Extensible Markup Language Battle Realms demo 44683 C:\Windows\Panther\UnattendGC\
PerfStringBackup.INI Windows Initialization Battle Realms demo 1321920 C:\Windows\System32\
api-ms-win-core-dateti... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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