Unable to connect to Dedicated Bedrock Server from the same PC

I have a Dedicated Bedrock Server running on my PC, and I can't connect from the same PC where the server is. If I add it onto the list of servers, it appears as "Locating server" and never finds it.

If I try to connect, I get "Unable to connect to world".

On my friend's PS4, it appears on the Friends tab as a LAN Game on a Dedicated Server.

And also on my sister's laptop.

Solution 1:

The file bedrock_server_how_to.html in the same compressed file as the server contains some information:

On some systems, when you wish to connect to the server using a client running on the same machine as the server is running on, you will need to exempt the Minecraft client from UWP loopback restrictions:

CheckNetIsolation.exe LoopbackExempt –a
–p=S-1-15-2-1958404141-86561845-1752920682-3514627264-368642714-62675701-733520436

You just need to copy and paste that command on a cmd terminal as administrator to lift the restrictions.