Apr
24
Fatal error is an error which causes a program to abort – and may return the user to the operating system and data that the program was processing may be lost.
A fatal error occurs typically in any of these cases:
- An illegal instruction has been attempted
- Invalid data or code has been accessed
- The privilege level of an operation is invalid
- A program attempts to divide by zero.

One of them can be Error 1603: Fatal Error During Installation
When running an installation, you receive the following error message:
“Error 1603: Fatal Error During Installation”
Or you may get the following error:
“Error 1603: General Windows Installer engine error. Increase DiskSpace requirement in Setup.ini and try again.”


Thanks for making the effort to describe the terminlogy towards the newbies!