Today, I traveled to London to visit one of my customers. I thought that using the train’s wifi would be a great way to quickly pickup some documents from my Office 365 SharePoint online configuration but no luck there:

I tried a couple of my tenants ( just in case), but no luck. My mobile that is not on a wifi simply works, so there isn’t anything wrong with my SharePoint site.

Has anybody else seen this before, that  wifi is blocking SharePoint online?