LAN connecting problem

when i host a LAN game it shows that its hosted on 0.0.0.0:*****
and when my friend tries to join ( as we are on the same home network) it says connection time out: connection or failed to join.

When my friend hosts the game it says the same thing 0.0.0.0:***** and it says the samething for me playing on our pc
we weren't able to play on LAN for a couple of months already

me and my friend would appreciate it of you help resolve this problem!!