there is no information about 64-bit systems, only old topics or topics with people complaining about lack of compatibility with x64 systems.
I have EA that communicates through named pipes, (i know how to use them) but it works only on 32 bit systems:
Windows XP 32-bit - WORKING
Windows 7 32-bit - WORKING
Windows 7 64-bit - NOT WORKING
Windows 8 64-bit - NOT WORKING
On 64-bit only communication between EAs in the same terminal works and that is not my goal.
Same is with tcp/ip examples downloaded from mql5.com site - they work on 32-bit, but not on 64-bit systems.
I need solution that works on 64-bit. If anyone has simple example (or links in code base) how to do it i would be very grateful.
OS size is irrelevant. Mt4 is a 32 bit program. Many people are using TCP/IP. Your code is broken, fix your code.

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Does anyone know how to enable communication between EA on 64-bit system?
There are tons of examples how to use pipes through kernel32.dll or how to use tcp/ip connection, none of witch (that i tested) work on 64-bit system.
Does anyone have working examples on how to run any kind of communication between terminals for x64?