An issue i had whereby a user could share his desktop over Lync 2013 but could not accept the sharing, this would error out with the below messages –


The root cause of this was two KB’s that had been installed via Windows Update – KB2760512 and KB2760556. After these had been uninstalled and the laptop had been rebooted, regular screen sharing experience had resumed.


Might be useful should you see this error in your environments.