If you're using Desktop Central, refer to this document to resolve this issue.
You are trying to install java patches and the installation fails with a message, "Error Code 1603. Java Update did not complete."
This might be due to some issue in the application level.
Here are some of the methods to troubleshoot this issue:
Note: You can either configure the deployment policy to initiate deployment during the 'System Startup' and then reboot your machine or reboot the machine and then apply the deployment policy as 'Default policy'.
If the issue persists even after following the above-mentioned resolutions, please feel free to contact Support.