Fixed error 1603 or 0x00000643 when installing or upgrading Microsoft Edge

  • Errors 1603 or 0x00000643 are caused when you install or update Microsoft Edge on your PC.
  • These errors can be easily fixed with a few simple troubleshooting steps.
  • The new version of Microsoft Edge, which runs on the Chromium engine, is also prone to installation and upgrade errors.
  • In this article, we will show you how to fix these errors with the help of the Microsoft Program Install and Uninstall Troubleshooter.
Updated February 2024This tool will stop these errors and fix common problems: Get it at this link
  1. Download and install the software.
  2. It will scan your computer to find problems.
  3. The tool will then correct the issues that were discovered.

Read on to learn how you can avoid this speed bump. The Microsoft Windows Installer Engine (Wondering what it is? Read here) displays this error message as a general error code when a problem occurs during installation. This error is most likely caused by the following factors:

We wouldn’t mind saying that Microsoft succeeded with Edge in 2020 especially since it has a history of not outdoing itself with web browsers.

Mainenginethread Is Returning 1603

There was a fatal error during the installation of Microsoft Installer 1603 (Microsoft Installer).

This post will teach you how to fix SCCM Application Installation Failed Unmatched exit code 1603. When SCCM tries to install an application, error code 1603 is displayed.

There are a few features that make Microsoft Edge stand out from other browsers and in particular from Internet Explorer. It is another version of the browser that looks different and performs better as well.

Msi Installer 1603

An error 1603 can mean a number of different things, but it is generally caused by a problem during the installation of Microsoft Windows Installer (MSI).

During the installation or updating of Microsoft Edge, a registry key corruption can result in error 1603 or 0x00000643.

In addition to this, Microsoft Edge supports many extensions that are currently available for the Google Chrome browser.

When updating to 1903, you receive error 0x8e5e0147.

Microsoft Edge error 1603 or error 0x00000643 has been reported by several users when they install it on their PC. If these errors appear on your screen while trying to install Microsoft Edge on your PC, you have come to the right place for help.

Solidworks Install Failed With Code 1603

Solidworks crashes or fails while running, so it’s called Runtime Code 1603. It does not necessarily indicate that the code was corrupt, just that it did not work at the time of its run-time. Symptoms, causes and ways to troubleshoot the problem will show up on your screen unless you handle and correct it.

Here is a guide to help you fix the 1603 or 0x00000643 error that Microsoft Edge displays when you try to install it or update it.

Errorcode 1603 0x643 Software Center

Hey, I have been trying to install the Barco ClickShare application using the software center. After downloading the MSI, I am having trouble installing it. It throws the error I mentioned.

Msiexec Exit Code 1603

The MSI error code 1603 indicates a failure that is generic and computer-specific, and sometimes is encountered while running an MSI installation using Windows Installer Service.


What are the causes of error 1603 or 0x00000643 when installing or updating Microsoft Edge?

What are the causes of error 1603 or 0x00000643 when installing or updating Microsoft Edge?

Uninstall Edge through the Settings app, download and install a fresh copy via the same method if it’s the cause of the error.

There is a possibility that you will encounter an error 1603 or 0x00000643 when installing or updating Microsoft Edge.

  • We will show you how to fix these errors in Windows 10 if they are caused by corrupt registry keys.
  • Problems with installation services are also to blame, as well as registry problems.

In addition to reporting this problem, Microsoft recommends running these suggestions with administrator privileges as soon as you notice it.

Wmic Return Value 1603

Windows 10 installers have a problem installing or uninstalling software with MSI package formats when they encounter error 1603.

Msiinstaller 1603

To re-register Windows Installer service: Open the Run dialog box and enter the command “msiexec /unregister”.


How to fix error 1603 or 0x00000643 when installing or updating Microsoft Edge

Updated: February 2024

We highly recommend that you use this tool for your error. Furthermore, this tool detects and removes common computer errors, protects you from loss of files, malware, and hardware failures, and optimizes your device for maximum performance. This software will help you fix your PC problems and prevent others from happening again:

  • Step 1 : Install PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista).
  • Step 2 : Click Start Scan to find out what issues are causing PC problems.
  • Step 3 : Click on Repair All to correct all issues.


How to fix error 1603 or 0x00000643 when installing or updating Microsoft Edge

Do pre-run checks

Installing and upgrading Microsoft Edge is prone to errors, just like Windows 10. There are a couple of errors that have been popping up more frequently lately – Error 1603 and 0x00000643 – though they aren’t too common yet. A few simple troubleshooting steps can be used to fix these two Windows errors, which are similar to most other Windows errors.

Make sure to perform the following pre-run checks before starting Edge Chromium to make sure you don’t run into any minor errors that may be preventing Edge Chromium from installing or updating. You should first run a virus scan, malware scan, third-party software scan, etc. If you have any, run a registry cleaner as well.

You may need to uninstall Edge and then reinstall it in order to resolve error 1603 or 0x00000643. If that doesn’t work, the Microsoft Fix It should resolve this issue.

If Edge Chromium still doesn’t install or update after you run the pre-run checks, continue to the steps below.

Run the diagnostic program to install and uninstall Microsoft programs

You can now move on to more complex troubleshooting after you have completed preliminary checks.

  1. Start by downloading and running the Microsoft Program Install and Uninstall Troubleshooter.
  2. It will run a scan on your computer and find and fix any problems it finds once the tool is installed. Simply follow the instructions in the tool to use it.
  3. It is also possible to resolve Edge Chromium error 1603 or X00000643 manually if you do not choose the second option.

Re-register the Windows installation service

Re-registering the Windows Installer service will restore the installer’s default settings if it hasn’t worked before. This will fix any registry problems.

The following commands should be copied and pasted to the command line, pressing Enter after each copy and paste.

Install msiexec.exe from %windir%system32.exe/uninstall
In the file %windir%system32msiexec.exe, run the software registry server.
Run %windir%syswow64msiexec.exe/unregister
Then use %windowsdir%syswow64msiexec.exe / regserver to complete the installation

Try one of the Edge alternatives after using the tool. If you are unable to install or update Microsoft Edge, try one of the Edge alternatives.

Enable Trusted Installer

Follow this guide to ensure that TrustedInstaller.exe is in automatic mode so that you can install, uninstall, and modify Windows updates.

Troubleshooting the Windows Installer

We recommend using one of two alternatives if Microsoft Fix didn’t solve the installer problem.

  • If Windows Installer isn’t working, follow the instructions below.
  • A safe mode option is also available for Windows Installer.


RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

  1. Close the background software.
  2. Make sure the software is not already installed.
  3. Make sure there is enough space on your hard drive for the software.
  4. Open the troubleshooter to install and uninstall it.
  5. Remove temporary files from the Windows Temp folder.
  6. Restart the Windows installation service.

Microsoft has begun automatically deploying the new Edge browser with Windows Update for customers running Windows 10 1803 or later. You can uninstall New Edge by performing a system restore to the date prior to installing New Edge.

Error number 1603 is a Windows error that occurs during installation when a security policy is enabled on your computer. You can configure the setting to allow you to install, but you must be logged in as an administrator to make changes. To check: If you are an administrator, it will appear under your name.

Select Edit Settings -> Allow Other Apps. Add "%ProgramFiles(x86)%MicrosoftEdgeUpdate MicrosoftEdgeUpdate.exe" for 64-bit machines or "%ProgramFiles(x86)%MicrosoftEdgeUpdateMicrosoftEdgeUpdate.exe" for 32-bit machines, where is the highest number in the Edge Update folder.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.