NAT Type: **Open** required for best connectivity. Moderate/Strict → UPnP / Port Forwarding (3074 UDP/TCP).
4. Account & Profile Issues
Child Account / Family Settings: Parent/guardian may have blocked "Online Multiplayer" or "Cross-network Play" in **Family Safety** (account.microsoft.com/family).
Region Mismatch: Account region ≠ Physical location / Store region. Change at account.microsoft.com → Profile → Region (once every 3 months).
Try a **different game** (preferably free-to-play like Fortnite). If it works → the specific game's servers are down or your game license is corrupt (reinstall).
Check game's Twitter / Reddit / Downdetector for outage reports.