another java installation is in progress

Error 1500. Another installation is in progress

This article applies to:

  • Platform(s): Windows XP, Windows 7, Windows 8, Windows 10
  • Java version(s): Remove Older Versions


During installation of Java from, a dialog box appears displaying

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:

  1. Two MSI based installers running at the same time. The MSI engine will not allow this.
  2. 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.


Please follow the steps below for resolving this issue.

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

I have been using JDK 9 on Windows 10 x64 for a while but when I went to install the latest early release (b174), I first uninstalled the previous version (as usual) and then ran the new installer.

It fails with a message box saying «Another Java installation is in progress. You must complete that installation before you can run this installer».

It seems there are some artifacts around causing the problem but only for JDK 9 as I can uninstall & reinstall JDK 8 without any issues. Also, the same problem occurs if I try to run the installers for any prior JDK 9 releases as well (even though they worked before).

Searches have suggested various options like using a Microsoft MSI clean-up tool and registry hacks but nothing is helping.

Can anyone suggest a way to get JDK 9 installed (as now I cannot use any release of JDK 9 at all)?

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Текст видео

End this process:
win 7 or 8: Msiexec.exe service*32

Win 10: Windows Installer 32 bit

This video will show you how to get rid of error code 1500 «Another Installation Is In Progress You Must Complete The Installation Before Continuing This One»

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