Heroes 3 issues under XP or Vista.

There’s a serious problem with launching TCP/IP and other network games in Vista x64.
In SoD, the following error appears:
DirectPlay Error:
'Unknown error?'
File: 'C:\hero3.prj\Source_Code\Game\Remote.cpp'
Line# 1867

in AB:
DirectPlay Error:
'Unknown error?'
File: 'D:\Localozation\ARMAGEDDON\H3x1-v21_Source_Code\game\Remote.cpp'
Line# 1867

I tried compatibility mode and installed patch 3.2.
Does anyone know what’s going on?

Based on the error message, we can assume the following:
The cpp file is a source code file for functions in C++. Based on the file name, it can be assumed that this is a function responsible for remote connection. A rough picture of the cause of the error emerges – this function is not compatible with a 64-bit system.
Have you even looked at the file it’s complaining about?
Have you tried searching for the error online? Look for this remote.cpp file
and upload it somewhere, or email it to me – I’m just curious. What other games don’t work, and what errors do they produce?