I have an issue with my minecraft.
If I try to log into my friend’s LAN server, they don't show to me, like this:

and the servers dont appears.
I played before with radmin in the same server with my friends, but i buyed another computer and now i have this issue.
I have my firewall deactivated, but doesn't work.
Previously I played normally on the same server I'm trying to connect to now, but this time the servers don't even appear
Please help me.
I have a windows 10, minecraft version is 1.15.2, the same of my friends versions.
那么我就输入123.123.123.123:12138就可以了,如果还是不能联机那就是网络的问题,
use this manual as example https://radmin-club.com/minecraft/lan-for-minecraft/
Turn off firewall and try to change metric of Radmin VPN adapter. Here you can read about changing metric https://www.raymond.cc/blog/choosing-which-connection-to-use-with-windows-routing-table-editor-gui/