Cannot join Lan games on win 10

[Amr22126]

After upgrading my laptop to win 10, I cant join any LAN games but I can host. For example, if I host a game from mt win 8.1 pc, the win 10 laptop cant join, but if I host from win 10 I can join from win 8.1. Please HELP!

Thanks in advance,

 

[Amr22126]

Please Please can anyone help