ZENworks Configuration Management 2017 Update 4
ERROR: The managed device was unable to initialize Novell encryption scheme for the session. Ensure that the managed device is UTC time synchronized with this system. If the problem persists, contact Novell Technical Services.
When using standard debug TID https://support.microfocus.com/kb/doc.php?id=3418069 to enable remote control debug mode the error seen in winvncapp.log is this:
SSLgeterror returned 1 ERR_get_error returned 67702888
This is fixed in ZENworks 2020 Update 1. for more information see ZENworks 2020 Update 1 - information and list of fixes https://support.microfocus.com/kb/doc.php?id=7024523