dll is not allowed in MQL5 VPS according to the rules:
Forum on trading, automated trading systems and testing trading strategies
Is 'Allow DLL import' and 'Allow modification of signal setting ' in MQL4 Indicators dangerous?
Sergey Golubev, 2017.09.09 06:05
Rules of Using the Virtual Hosting Service MetaTrader (Forex VPS)
No DLLs are allowed on a Virtual terminal. There is no physical capacity to use DLLs there.
If a program launched on a Virtual terminal tries to call a function from any DLL, this EX4/EX5 program is immediately stopped due to a critical error. Any DLL calls are forbidden.
Sergey Golubev:
Ok, i see. Thanks for that
dll is not allowed in MQL5 VPS according to the rules:

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Hi guys, anyone have the same problem with me ?
try to migrate experts and it's failed. "DLLs are not allowed"
any chance to fix it ?
thanks heaps