MT4 also developed by its own company does not work why the DLL. Script under DLLSampleTester.mq4
This program was developed by Metaquetes and belongs to the latest version of Mt4.
Yes, I am well aware of that, but MetaQuotes has not updated that code for many years and it is still from the original from builds prior to the modern changes.
This problems is solved.
There is a 32-bit requirement for the DLL for MT4. 64 bit does not support.
The MT4 and MT5 VS2017 screenshots are enclosed.