Thus, it will show an error if another instance of the Microsoft Installer is already in use. Wait till your existing installation is complete as it is already mentioned above that the Microsoft Installer can run only one process at a time.

Methods to fix Java error 1618 Method 1: Wait till the existing installation is complete Windows Update can break the installer sometimesįollow the methods below to fix the java error code 1618.The existing Java installation might be corrupted.Antivirus programs (mostly third-party ones) can be over-protective sometimes causing the Java installation to stop every time it starts.There could be an error in the Microsoft Installer Service: The service might have been stopped or having some error state which can cause hinder the installation.There can also be many several causes other than the one mentioned above that can cause this error to occur. “ Java update did not complete: Please refer to the Java Help Center for troubleshooting information or contact your system administrator.”

Java error 1618 windows 10