Before I go into a long confusing story about what I've done to try and make this work, do I have to be on the same local network to screen share with someone? (cue long confusing story). I'm trying to screen share with my girlfriend, using the Screen Share app. We both have Screen Sharing checked in our System Preferences, Allow Access for All Users checked, and have a password set for VNC users, and "anyone may request permission to use screen" is checked as well. That being said, my girlfriend copied and pasted the "Other users can access your computer's screen at vnc://blahblahblah/ or by looking for Rons MacBook Air in the Finder sidebar." to me, and I typed in "vnc://blahblahblah/" into the text box for Host: in the Screen Share app. So reason dictates we should be able to connect, right? Am I missing anything? Because on my end, it'll say Connecting... but she won't get a notification or pop-up asking permission for me to connect or anything. Then my Connecting... window will say, "Please make sure that Screen Sharing (in the Sharing section of System Preferences) is enabled on the computer to which you are attempting to connect. Also make sure your network connection is working properly." We both have screen sharing enabled, and we are both using the internet, so I'm not sure where the issue lies. Can anyone offer any insight or help? I've attempted various searches online for solutions, but haven't found anything that has solved my problem. Any help at all would be awesome. P.s. I have a 2011 MacBook Air with OSX 10.9.2 and she just bought her MacBook Pro with OSX 10.9.2 as well.