Check that your firewall is disabled or has an exception for the MCGS application.
This is non-negotiable. Many antivirus programs quarantine the HMI driver DLLs because they write to protected registry keys. mcgs pro hmi software free download fix
MCGS Pro’s serial driver conflicts with other software (e.g., Siemens Step7, Modbus pollers). Check that your firewall is disabled or has
