@David-TP I did not see any error messages. I heard that my inverter supports ethernet, but I do not see a port and have to remove the cover to check. Maybe I will do that one day and connect it that...

I finally succeeded in connecting again by disabling almost every option. But now the connection is gone again.

After updating the firmware on my X50 yesterday my SolarEdge inverter (SE4000H) has no connection anymore and I cannot get it to connect anymore. The inverter always had difficulties connecting when...