MqTT in Wiser for KNX

[JRP]

It is most likely your PC firewall.

Hello
Eureka!
Effectively it is the w10 firewall that was blocking traffic, I have opened port 1883 and it has connected and worked the first time.
After writing the last message it occurred to me that it could be the firewall, but until you told me to try from another PC, the light bulb did not light up.
Thank you very much Daniel for your interest and your reconmedances.
a greeting