I cannot get TCP Packets while wireshark not running

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Hi,

I am developing embedded software. This software communicates with the outside world using the TCP protocol. I aim to send and receive data to the device I developed with the Hercules program. My embedded device works in server mode and my computer works in client mode and communicates via port 1453. I can get a response when I ping my embedded device. I can open the port from the Hercules program, and when I send data, my embedded software can receive the data I sent. However, when my embedded device sends data to the client side(PC), that is, the computer, the data does not arrive. When I open the wireshark program and listen to the relevant area, the data comes in properly and I can see the incoming data in the Hercules program. When I close the wireshark program, incoming data is interrupted again. Karspesky is installed on the computer I work on. and I am suspicious of this program. Because when I try it on another computer, the data can be transferred properly without the need for the Wireshark program.

I closed the Karspersky program and changed the firewall rules, but the result did not change. I expect your help and wish you good work.