Screen Sharing Spinning Connection

If you are having problems doing screen sharing and the dialog box goes into a spin cycle, follow MartsMac advice below.
This seems to be a HUGE bug that has been around for ages – I found at lest one thread of people complaining about this over a year ago!
Screen sharing usually works ok for me but this lingering login window is a real bust!
You can get the window to go away by logging off or pulling up activity monitor and killing “NetAuthAgent”
via Apple – Support – Discussions – Screen Sharing Spinning Connection ….