Java not updating registry
The good news is that you can often update the device driver to fix the Error 1603 problem.
Finding the exact driver for your Error 1603-related hardware device can be extremely difficult, even directly on the Oracle Corporation or related manufacturer's website.
Caution: Unless you an advanced PC user, we DO NOT recommend editing the Windows registry manually.
Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows.
They offer a malware removal guarantee that is not offered by other security software.
Over time, your computer accumulates junk files from normal web surfing and computer use.
Tip: Although Disk Cleanup is a wonderful built-in tool, it will not completely clean up all of the temporary files on your computer.
In fact, one misplaced comma can prevent your PC from booting entirely!Even if you are experienced at finding, downloading, and manually updating drivers, the process can still be very time consuming and extremely irritating.Installing the wrong driver, or simply an incompatible version of the right driver, can make your problems even worse.How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8, and 10): 1603 errors can be related to corrupt or outdated device drivers.Drivers can work one day, and suddenly stop working the next day, for a variety of reasons.