Google Drive not working over WiFi on OnePlus 5 (does work on mobile data)

[Android Central Question]

Google Drive will not upload any files on my OnePlus 5 when I'm connected by WiFi. The app just "spins" (the white / blue circle spins around as if it's uploading the file, but it never does).
Google Drive works fine when it's on mobile data and not on a WiFi network.
So, this is the opposite of the more common problem, when it work on WiFi but not on mobile data because of a setting.
I have tried disabling and then enabling, reboot, and clearing cache, with no effect.
Just to be clear: the problem is any WiFi network, not one in particular. (And the one I normally use, at my house, works fine with Google Drive on my Chromebook.)
Thanks for any advice.

 

[SpookDroid]

Have you checked to see there are no VPNs or Proxies or custom network settings (like a custom DNS) set up on your phone? Those would affect WiFi only and could explain if any of the Google services aren't accessible.

 

[B. Diddy]

Welcome to Android Central! This could also be related to the Google server outage that occurred over the weekend in parts of the US.