Windows 10 Update 2022 H2 caused the LAN connection between my Windows 11 & 10 computers to fail.

It worked before we ran the update on the W10 computer, it failed ever since after running the update. There were no other things changing during that time, so it is clearly down to that update. Both computers were running 1.19.51 Minecraft already for a while.

We simply cannot see each others worlds. Of course tried all the 'fixes' that are posted online, but none work for this.