Install4J ERROR: The installation/removal of a previoius program was not completed.

Error that may stop new installation:

The installation/removal of a previoius program was not completed. You will need to restart your computer to complete that installation.

After restarting your computer, run Setup again to complete the installation of Program name.

How to solve the issue without restarting:

Remove following keys:

HKEY_CURRENT_USER\SOFTWARE\ej-technologies\install4j\RebootCheckFile

HKEY_LOCAL_MACHINE\SOFTWARE\ej-technologies\install4j\RebootCheckFile

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations