Client Dropping Connection

I am currently running WinCC v7.5, SP1,Update 2 in a server with single client setup.  Both PC's are running Windows 10 Professional.  I would approximate every 3 - 4 weeks the client loses the connection with the server where I am seeing exclamation points in the I/O fields.  Rebooting the server PC immediately corrects the situation for another period of time.  

Has anyone experienced any similar to this?

I was reviewing the log files in the diagnose folder and nothing jumped out to me as being the definitive reason why this happening.  I did notice one thing, however, and does not appear to correlate when losing the client connection.  I do observe an occasional error in one of my scripts and do not how to correlate the ID with the actual script.  

The file I was looking at is called "WinCC_Sys_01.log".

The error I am seeing is this

"2303,03.11.2021,08:39:34:269,1007001,4,,COMPUTER NAME,,SCRIPT,ExecuteError in Action @17,MSG_STATE_COME"

Is 4 the script reference and 17 the line where the error is occurring?  How do I correlate that to a script name? All I can tell is that it is an Action.

Thanks for any advice you may be able to provide,

oneMark

hi Mark!

I don't know to what extent the script may be affecting the client's communication with the server, but I would recommend you check a number of things:

- Is the WinCC server accessed via RDP? If so, I recommend you remove remote access and follow this FAQ.

- Have you tried to delete the DCF file? I would try following this FAQ to eliminate possible inconsistencies.

- Is the project SQL database configured correctly? This could affect the operation -> FAQ (even if it refers to PCS7, it also applies to WinCC without PCS7 installations).

I hope some of this helps!