Famously, many retail and academic versions of Visual Basic 5.0 and 6.0 would accept a sequence of ones (e.g., 111-1111111 ) because the validation algorithm simply checked if the sum of the digits met a specific mathematical requirement (often a Modulo 7 check). Why People Still Search for VB5
The setup.exe must be run with elevated privileges.
Many industrial machines and older accounting systems still run on VB5 binaries. If the source code needs a tweak, you need the original IDE.