Sets MaxUserPort = 65534 so Windows can hand out far more outbound (ephemeral) ports. Prevents 'port exhaustion' when an app opens thousands of simultaneous connections. Harmless for normal use. Reboot recommended.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/tcp-ip-port-exhaustion-troubleshooting