Can't connect to xfinitywifi on one device

I have been using an xfinitywifi connection for months now at my office building without hiccups, what's a steady signal. Friday I was able to connect on my phone, but my laptop would not connect. Today the problem persists: 5 bars of stable wifi on my phone, but I just get a "can't connect to this network" message on the laptop. Works fine on my home wifi.

I tried forgetting the network in the hopes that I could reconnect manually with my username and password but no such luck. Any guidance appreciated.