I found an issue where sometimes I am connected to a TeamViewer session, the clipboard synchronization doesnt work. So I am unable to copy/paste from my local system to the remote TeamViewer session.
I found if you disable “Enhanced Multi-User support (for Terminal Server)” on the remote system, then disconnect your session and reconnect with TeamViewer, then the clipboard between the local and remote session works just fine.
I have notified TeamViewer of what I found and hopefully they will look into the issue and have a update out to resolve.