I have been using Netdrive OK for a few months, using it to attach my Dropbox drive as a drive letter on a Windows Vista machine, ready for when Dropbox stop their own support of Vista. It has all been working fine, using Netdrive 2.6.18 and Dropbox 35.4.20
Today it has not connected. When Netdrive starts up, it tries to connect, and I get a “waiting for authentication” window (which I don’t normally see). Then Dropbox asks me to Allow access, which I do, and then Dropbox says I can close that window down. But when I go back to Netdrive, Dropbox hasn’t connected. If I click on Connect, I just go around the same loop again.
So far I have stopped/restarted both applications, and the entire machine, with no difference.