I just set up a brand new single-server 2016 environment but have run into a puzzling issue with it. Any site collection and sub-site I create have blank home pages with only the SP icon, top nav, and ribbon, and when watching the traffic with Fiddler I'm seeing a couple 301s, 401s, and a 404 when the page loads. In addition, the People Picker gives The account I'm using has full control of the sites.
I've done all the basic checks to ensure services, application pools, IIS sites, etc are all running and using proper accounts, and I've triple-checked permissions. I've also tried this People Picker fix involving HTTP Activation features, but it didn't help either. I'm kind of stumped at this point. Does anyone have an idea where I should look next?
Update: Another puzzling piece I just noticed is that when trying to access sub-sites, I get redirected to a 404 page on the top-level site. After getting the 401, it then sends a 302 titled "Document Moved" and a notice about the URL having changed. I don't actually see it on screen, it just shows up in Fiddler. What daemonic hex have I accidentally put on this environment?