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   Namrata Podder

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   Namrata Podder

   2020-10-20T19:09:23+05:30Added an answer on October 20, 2020 at 7:09 pm

   The Java error 1603 is one that occasionally occurs when installing Java updates in Windows 10.

   When that error occurs, an error message windows open stating, Java install did not complete Error Code: 1603.

   The error message highlights that your Java update hasn’t installed. This is how you can fix Java error 1603 when that error message pops up.

   Some ways to fix the 1603 error:

   1. 1. Check you’re installing the right Java version for your platform
      2. Install Java as Administrator
      3. Uninstall the previous Java version first
      4. Remove the KB2918614 Windows Update

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

   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 check whether your system is 32 or 64-bit as follows.

   • Press the Windows 10 Cortana taskbar button.
   • Input the keyword ‘system’ in the search box.
   • Then click About your PC to open the window directly below.

    

   • Scroll down to the System type specification that tells you if the platform is 64 or 32-bit.

   Another thing to note is whether your currently installed Java SDK is 32 or 64-bit.

   There can be a 64 and 32-bit conflict if you’re trying to update Java with a 32-bit version to replace a 64-bit Java SDK or the other way around.

   So, install a 64-bit Java version to replace an outdated 64-bit version, or update 32-bit Java with the latest 32-bit version.

   2. Install Java as Administrator

   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.

    

   3. Uninstall the previous Java version first

   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 third-party uninstaller to Windows with which you can completely remove Java.

   This is how you can uninstall Java with the freeware Advanced Uninstaller PRO 12 for Windows.

   • Press the Free Download button on this homepage to save Advanced Uninstaller PRO 12’s to Windows.
   • Open the Advanced Uninstaller PRO 12 setup wizard to install the software.
   • Open Advanced Uninstaller PRO 12, click General Tools and Uninstall Programs to open the window directly below.
     
   • Select Java and press the Uninstall button.
   • Click the Use the leftover scanner radio button on the dialog box window shown directly below.

   

   • Press the Yes button to uninstall Java.
   • Select all the registry entries when the Application uninstall cleanup window opens, and press the Next button.
   • Restart Windows after uninstalling Java.
   • Install the latest Java version with the 32 or 64-bit Windows offline installers.

   4. Remove the KB2918614 Windows Update

   • Removing the KB2918614 Windows update might also fix the Java error 1603. To remove that update, press the Windows key + R hotkey.
   • Enter ‘appwiz.cpl’ in Run, and click the OK button.
   • Click View installed updates on the left of the Control Panel to open a list of Windows updates as in the snapshot directly below.
   • Enter the keyword ‘KB2918614’ in the search box.
   • Select the KB2918614 update, and press the Uninstall button.
   • Restart your desktop or laptop.

   Windows might reinstall the KB2918614 update. To ensure that doesn’t happen, check out the Show or hide updates tool.

   Click Download the Show or hide updates troubleshooter package now on this page to save that tool to Windows.

   Then you can instruct Windows not to reinstall KB2918614 by opening Show or hide updates, selecting its Hide updates option, and clicking the KB2918614 checkbox.

   Hope it helps!

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