Been using Dropbox for many years. Normally DB is connected and status is "up to date". And it had been then when I started VPN to the office, that DB would lose connection (not surprising) and would then re-establish the connection. But for the past few updates, the DB icon in the tray is grayed out and the status stays "Connecting...". Sometimes it will even sync any changes that get made (say I upload a picture via my phone), but not always. Proxy is set to AUTO.
Definitely didn't have this problem in earlier versions - just not sure exactly when it started (currently running v127.4.4265 on Windows).
I changed to "No Proxy" but Dropbox still didn't connect (we do use proxies at VPN, so that's why I've used auto-detect in the past and it correctly detected "no proxy" when off VPN and "proxy" when on VPN)...
I did notice this morning that Dropbox had connected overnight. Hours after the initial VPN gets established - Dropbox is finally able to connect.
I'll check again tomorrow (VPN connect gets reset every 24 hours; currently connected for 4.2 hours).