Stop sharing dropdown menu is not shown on 64 bit applications while doing Screen sharing on a 64-bit Windows machine.
1. Enter in a meeting on a 64-bit system.
2. Start screen sharing.
Observe that the stop sharing dropdown menu is not shown on any of the 64-bit applications like notepad, explorer etc.
Since, stop sharing option is not shown on the 64-bit windows or applications. So, after sharing 64 bit windows or 64-bit applications, user has to go to meeting window to stop sharing.