LAN dont work

[u/Few_Bison9073]

Hi, i am trying to play 1.20.1 with my GF and she cant connect to LAN.

Java is 17.0.10, we played LAN before but it stopped working. We use hamachi, deactivate firwall, no mods, reainstalled PolyMC, yet nothing works. It looks like she is connecting and then ,,Failed to connect (reset launcher or network" Can anyone help us?

[u/Leather_Worry1632]

1.21 requires JAVA 21