Hi Thomas,
Thank you for your comment.
The server has the same level of c++ redistributable package installed as the development environment.
Of course, it meets the system requirements of Plex r7.2.1.
Windows Server 2012/2016 has successfully called WinNTC server functions, but the message embedded in the action diagram is not displayed in Event Viewer.
In Windows Server 2008 R2, when we call 'AA4F' WinNTC function, it is displayed in Event Viewer as shown below.
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1. Calling function 'AA4F (AA4F)' (External).
2. TEST <- Message embedded in action diagram.
3. Called function 'AA4F (AA4F)' (External). Duration = 0ms.
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Windows Server 2012/2016 only output the following information to Event Viewer.
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1. Successfully created mutex objects [Global\Mutex.*******************************************]
2. Received a client request calling function AA4F (in library AA4F (thread or process 3872)).
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I will open a support case on this question.
Regards,
Hifumi