"Lock workstation" not working in Windows 8.1

[iamanson]

Hi,
I am using version 1.2.0.6 server and viewer in windows 8.1. When I check "Lock Workstation" option in admin setup, I cannot login to my workstation again. Is it setting problem? Please help. Thanks.

Syndrome:
1. Disconnect from windows workstation
2. Login windows workstation
3. It goes to windows login screen and I input password to login correctly.
4. Ultravnc viewer disconnected and workstation locked.
5. Ultravnc viewer reconnect goes to windows login screen and I login, viewer disconnect again.
6 Loop at step 4-5, can never login.

ultravnc.ini
[admin]
UseRegistry=0
MSLogonRequired=1
NewMSLogon=1
DebugMode=0
Avilog=0
path=C:\Program Files\uvnc bvba\UltraVNC
accept_reject_mesg=
DebugLevel=0
DisableTrayIcon=0
LoopbackOnly=0
UseDSMPlugin=0
AllowLoopback=0
AuthRequired=1
ConnectPriority=2
DSMPlugin=
AuthHosts=
DSMPluginConfig=
AllowShutdown=1
AllowProperties=1
AllowEditClients=1
FileTransferEnabled=1
FTUserImpersonation=1
BlankMonitorEnabled=1
BlankInputsOnly=1
DefaultScale=1
primary=1
secondary=0
SocketConnect=1
HTTPConnect=0
AutoPortSelect=0
PortNumber=590x
HTTPPortNumber=580x
IdleTimeout=0
IdleInputTimeout=0
RemoveWallpaper=1
RemoveAero=0
QuerySetting=4
QueryTimeout=3
QueryAccept=1
QueryIfNoLogon=1
InputsEnabled=1
LockSetting=1
LocalInputsDisabled=0
EnableJapInput=0
kickrdp=0
clearconsole=0

[Rudi De Vos]

There is a little problem with this option from Vista >=

1)Logon run in another session as the default desktop
2) After you logon, the logon session close, server close and is restarted in the default desktop

"logon session close...server close" but you have set lock session on server close
Current no solution, still looking for a way to differntiate between a session switch and an actual viewer close.

Best way now, is to set the screensaveer with a low time and activate screen lock with the screensaver.