Java DK is not getting installed

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SUMMARY

The discussion centers on issues encountered while installing the Java Development Kit (JDK) on a Windows system. The user mistakenly installed the JDK in the wrong directory (c:\program files) and faced difficulties uninstalling it, leading to a write-protection error when attempting to delete the "java" folder. Subsequent attempts to reinstall the JDK resulted in error 1721, indicating a problem with the Windows Installer package. Suggested solutions include reinstalling over the existing installation and following Microsoft support guidelines for Windows XP.

PREREQUISITES
  • Understanding of Java Development Kit (JDK) installation processes
  • Familiarity with Windows operating system file management
  • Knowledge of Windows Installer error codes and troubleshooting
  • Basic skills in using System Restore on Windows
NEXT STEPS
  • Research how to resolve Windows Installer error 1721
  • Learn about managing write-protected files in Windows
  • Explore the Java Development Kit installation best practices
  • Investigate the use of Microsoft support resources for installation issues
USEFUL FOR

Java developers, system administrators, and anyone troubleshooting JDK installation issues on Windows systems.

hermy
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Hello!

I installed java developers' kit today, but in c:\program files by mistake. I wanted to change it to c:\, so initially I just cut-pasted it. It didn't work, so I uninstalled it (add or remove programs in control panel). However, when I tried to delete the "java" folder in c:\, it said that some file was write-protected and couldn't be deleted.

I tried to install java DK again, this time mentioning the correct destination, but it wouldn't install. I get an error no. 1721 saying that "there is a problem with this package of windows installer. A program required for this install to complete could not be run" . I am surprised because, earlier, when I had installed java (albeit, at the wrong destination) there was no such error.

I also tried System Restore, but the folder "java" is still stuck there, and I keep getting error 1721.

Any help would be appreciated. Thanks in advance.
 
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Try reinstalling over the old installation (in the same folder exactly). If that works, then formally uninstall that (via Control Panel). Then reboot, and try again.
 
Also, see http://support.microsoft.com/kb/891985 if you are on Win XP
 

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