Can't install JDK 9 because “Another Java installation is in progress”

Question

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 ra

Answer 1

Try locating the lock file here:

%USERPROFILE%\AppData\LocalLow\Oracle\Java

Deleting it allowed my Java 10 installation to start.