When I connect to "xfinitywifi" on my iPad, an authentication window pops up and I log in to use it. On my Lenovo Thinkpad W540 running Windows 10, it just simply says "No Internet" when I connect to it. This hotspot is an open network, but requires a login via web browser to access the internet.

What can I do to open the activation window? I tried opening a webpage on Microsoft Edge and Google Chrome and nothing works. Click image for larger version. 

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