Im using windows 10 error port cant be oppen, open door on modem and firewall deactived
This is not a bug report. Bug reports require a lot more information and you've provided barely any. There's also no reason to believe this isn't a problem on your system.

The best place to start is by giving more information about what error messages you're seeing.
In response to Lummox JR
Logging in...
BYOND pager is offline. Connecting as Guest.
Wed Mar 15 19:33:52 2023
World opened on network port 2303.
Welcome BYOND! (5.0 Beta Version 515.1602)

BYOND hub reports port 2303 cannot be reached by players.

A firewall or router may be interfering with your connection. For information on hosting worlds through a firewall or router, please visit BYOND Help or
Your router probably just needs port forwarding to be configured.

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