I'm using LR cc and when I try to use the Upright feature, I get a message back stating that "No Upgright Connection Found". I haven't had this problem in the past. Im using Windows 10 and I used a Canon 7D Mark II with a Canon 24-70 II lens.
It simply means that it can't find enough information in the image to apply a correction. Have you tried applying a profile, and then using the Upright transform.
Ah, that was it. I tried it on a few other pics in the same library and it performed the action. Thanks!