FIX!!! Xbox one/Windows 10 Connection Problem - YouTube
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Internet is working but won't let me connect to Xbox live
I try to connect, says i cant connect and to test my connection. I goto test my connection says everything is fine and i can connect to xbox live. So i go try to log into xbox live, and it says i cant connect and i should test my connection. glad im not the only one this is happening to. Xbox One Won't Connect to WiFi? 3 Steps to Fix the Issue Aug 20, 2018
I would also suggest a hard reboot of the Xbox One (Unplug the power and wait about 30 seconds to a minute then plug it back it). Once plugged back in, reboot the Xbox One and allow it to power up.
How to connect your Xbox to a hotel wireless network