Error 1500. Another installation is in progress

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Error 1500. Another installation is in progress

This article applies to:

Platform(s): Vista, Windows XP, Windows 2000, Windows 2003
Java version(s): 6.0

SYMPTOMS

During installation of Java from Java.com, a dialog box appears displaying

Error 1500, Another installation is in progress. You must complete that installation before continuing this one.

CAUSE

Error 1500 is a general MSI (Microsoft Installer) install error message resulting into failure of the Java installation process.

The cause of this error could be:

Two MSI based installers running at the same time. The MSI engine will not allow this.
In-Progress key left behind if an earlier installation attempt is cancelled forcibly via the Task Manager (Ctrl+Alt+Del) during a transaction/installation process.

SOLUTION

Please follow the steps below for resolving this issue.

Remove any traces of the failed Java installation by uninstalling Java
Download and install the Windows offline installer package.