When we use Remote Control and try to login to a workstation by sending a ctrl + alt + del request nothing happens.
Hence we can't login to the machine. The problem occurs only with our Windows 7 workstations, Windows XP works okay.

Thanks in advance,

ZCM 11 on Windows server 2008R2 Enterprise 64-bit OS

ZENworks Adaptive agent version:

Workstations: Windows 7 Pro. SP1 64-bit OS