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MT4 Matequotes-Demo Accounts were blocked

First in Journal has appeared: 2015.09.03 17:38:32.339 LiveUpdate : 'C:\Windows\system32\MetaViewer64.dll' successfully registered and next: 2015.09.03 17:38:34.285 '5946049': connect failed [No connection] after all my MetaQoutes demo-accounts were blocked and it is impossible to open new one

Serial port communication

How I can communicate via serial port with external equipment monitoring and control with string or int data type