How to Fix Java Update Error 1603 on Windows?

Fix Java Update Error 1603 on Windows – Java Update is a feature that keeps your Windows computer up-to-date with the latest Java releases. When you have auto-update enabled, your system periodically checks for new versions of Java. When a new version is found we ask your permission to upgrade your Java installation.

Fix Java Update Error 1603 on Windows

What Is Java Error 1603?

The error “Fatal error during installation” is a Windows Installer (MSI) issue. This error usually signifies that “something the installation expected wasn’t available.” Also, “something the installer didn’t expect exists.”

How to Fix Java Update Error 1603 on Windows?

1. Check if you’re installing the right Java version for your platform

  1. Press the Windows 10 Cortana taskbar button.
  2. In the Search box, Input the keyword system.
  3. To open the window directly then click About your PC.
  4. Scroll down to the System type specification that tells you if the platform is 64 or 32-bit.

First, make sure that you’re not installing 64-bit Java on a 32-bit system. If you are, that’s probably why Java doesn’t install. You can select to download Windows x86 Offline, which is the 32-bit version. You can check whether your system is 32 or 64-bit as follows. Another thing to note is whether your currently installed Java SDK is 32 or 64-bit.

2. Install Java as Administrator

Fix Java Update Error 1603 on Windows – Installing software as an administrator can resolve installation issues. As such, try installing the latest Java version as an administrator. To do that, right-click the latest Java installer, and select Run as administrator to launch the setup wizard.

Fix Java Update Error 1603 on Windows

3. Uninstall the Previous Java Version First

  • Download IObit Uninstaller PRO for Windows 10.
  • To install the software open the setup wizard.
  • Open IObit Uninstaller PRO, go to Programs, and select All Programs.
  • Choose Java, and press the Uninstall button.
  • Check the Select all box in the next dialog window to completely remove software leftovers.
  • After uninstalling JavaRestart Windows.
  • Install the latest Java version with the 32 or 64-bit Windows offline installers.


Uninstalling the previous Java version first ensures there are no 32 or 64-bit conflicts when you try to install the latest version. Add a reliable third-party uninstaller to Windows, with which you can completely remove Java.

Also Read: Fix Windows 10 Update Error 0X80080008

4. Turn Off Antivirus Software

  1. Right-click the taskbar, and select Task Manager.
  2. Click the Startup tab, and then select your antivirus software.

Antivirus software might be blocking your Java deployment. To ensure that isn’t the case, you can temporarily disable many antivirus utilities by right-clicking their system tray icons and selecting a disable option.

Alternatively, temporarily remove the antivirus software from the Windows startup and then reboot. This is how you can disable antivirus utilities on the Task Manager’s Startup tab.

  1. To exclude the software from the startup, Press the Disable button.
  2. Install Java after restarting Windows.

5. Close Programs That Run Java

Before installing Java, make sure all other programs are closed. When you try to install the latest version, there may be programs that execute Java. You must close the browser and any other Java-enabled apps after using the Java installation. If you don’t, you can get a Java error 1603.

After downloading the Java installer, close your browser. Also, see if there are any third-party program icons in your system tray (notification area). If this is the case, close the programs in the system tray.

6. Task Manager Fix

  1. The Offline Installer is available for download.
  2. Activate Task Manager.
  3. All non-system processes, as well as the whole Explorer process tree, should be terminated.
  4. Start the Task Manager again by pressing Ctrl-Alt-Del.
  5. Start the Offline Installer by running a file.
  6. Check To See If JAVA Is Now Installed And Functioning Properly.

7. Disable/Enable Java Content

Before installing, this approach blocks Java content in the browser.

  1. Shut Down The Installer When You Get The 1603 Error.
  2. In the Java Control Panel, locate and
  3. “Enable Java Content” in the Web Browser should be unchecked.
  4. Select the Security tab (uncheck) in the Java Control Panel.
  5. Uncheck the option Enable Java Content In The Browser.
  6. To Verify The Modifications, Select Apply And Then OK.
  7. Java must be reinstalled, and Java content must be enabled again in the browser.
  8. The Offline Installer Package can be downloaded and installed.
  9. If you need to use Java content in the browser, after the installation is complete, re-enable “Enable Java content” in the browser.

8. Run Program Install And Uninstall Troubleshooter

A program installation troubleshooter is not included with Windows. The Program Install and Uninstall troubleshooter is still available for download.

That troubleshooter may be able to help you fix the Java problem 1603. By clicking the Download option, you may install the troubleshooter on Windows 10. Then, to launch the window, go to the location where you saved the installer. Double-click MicrosoftProgram Install and Uninstall.meta.diagcab.

  • From Microsoft’s official website, download and install the “Program Install and Uninstall troubleshooter.”
  • To open the Troubleshooter, double-click the MicrosoftProgram Install and Uninstall. meta.diagcab file.
  • In the new window that appears, click Next and follow the on-screen instructions.

9. Delete KB2918614 Windows Update

For many Windows 10 users, Windows Update KB2918614 appears to be generating Java installation and update difficulties. As a result, deleting this update may assist in resolving the issue.

  • Using the Windows key + R, open the Run dialogue box. In the Run box that opens up, type appwiz.cpl and click OK.
  • When the Programs in Features box displays, click the View installed updates option in the left panel.
  • You’ll see a list of updates that have been installed. Look for the code KB2918614.
  • Click the Uninstall button next to the KB2918614 Windows update.
  • Once the uninstallation is finished, restart your personal computer to see if the Java issue 1603 has been resolved.

Windows may reinstall the KB2918614 update. Disable automatic updates to stop this from happening.

10. Don’t Install Java With LogMeIn

When LogMeIn users attempted to install Java remotely. They received the Java error message 1603. The LogMeIn remote desktop software can cause an installation error.

So, if you’re using LogMeIn to install Java. Uninstall it and install Java on your PC without using remote desktop software. Check out other LogMeIn alternatives if you genuinely require remote desktop software to install Java

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