Você pode tentar usar o logoff.exe ou o shutdown.exe (com o sinalizador -l, é claro) como o protetor de tela de tempo ocioso
Para fazer isso (de forma que ele use os argumentos do protetor de tela do windows corretamente), você precisaria criar um script que aceitasse os argumentos do protetor de tela definidos aqui enfocando principalmente a bandeira / s
Logoff.exe:
Logoff command kicks off (logging off) the specified remote session. Log off help shows,
C:>logoff /?
Terminates a session.
LOGOFF [sessionname | sessionid] [/SERVER:servername] [/V]
sessionname The name of the session.
sessionid The ID of the session.
/SERVER:servername Specifies the Terminal server containing the user
session to log off (default is current).
/V Displays information about the actions performed.
E.g.,
C:>logoff /server:infra-apps 1 /v
Logging off session ID 1
Shutdown.exe
Usage: shutdown [/i | /l | /s | /r | /g | /a | /p | /h | /e] [/f]
[/m \computer][/t xxx][/d [p|u:]xx:yy [/c "comment"]]
No args Display help. This is the same as typing /?.
/? Display help. This is the same as not typing any options.
/i Display the graphical user interface (GUI).
This must be the first option.
/l Log off. This cannot be used with /m or /d options.
/s Shutdown the computer.
/r Shutdown and restart the computer.
/g Shutdown and restart the computer. After the system is
rebooted, restart any registered applications.
/a Abort a system shutdown.
This can only be used during the time-out period.
/p Turn off the local computer with no time-out or warning.
Can be used with /d and /f options.
/h Hibernate the local computer.
Can be used with the /f option.
/e Document the reason for an unexpected shutdown of a computer.
/m \computer Specify the target computer.
/t xxx Set the time-out period before shutdown to xxx seconds.
The valid range is 0-315360000 (10 years), with a default of 30.
If the timeout period is greater than 0, the /f parameter is
implied.
/c "comment" Comment on the reason for the restart or shutdown.
Maximum of 512 characters allowed.
/f Force running applications to close without forewarning users.
The /f parameter is implied when a value greater than 0 is
specified for the /t parameter.
/d [p|u:]xx:yy Provide the reason for the restart or shutdown.
p indicates that the restart or shutdown is planned.
u indicates that the reason is user defined.
If neither p nor u is specified the restart or shutdown is
unplanned.
xx is the major reason number (positive integer less than 256).
yy is the minor reason number (positive integer less than 65536).
Além disso, no caso de usar o logoff.exe, um benefício pode ser que ele possa ser executado por um serviço no nível do sistema que monitore o cronômetro ocioso e faça logoff dos usuários, passando o ID da sessão do console.
Note que esta implementação provavelmente requer o uso de pelo menos um pouco de programação