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For advanced users and IT administrators, the following registry key can be utilized
to disable Connected Standby and force Disconnected Standby.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Power]
"EnforceDisconnectedStandby"=dword:00000001
POWERCFG /SETACVALUEINDEX 381b4222-f694-41f0-9685-ff5bb260df2e
SUB_NONE CONNECTIVITYINSTANDBY 0
POWERCFG /SETDCVALUEINDEX 381b4222-f694-41f0-9685-ff5bb260df2e
SUB_NONE CONNECTIVITYINSTANDBY 0
Phases of Modern Standby
Windows implements Modern Standby in a multitude of manners. The concept of
Modern Standby is to allow dynamic and aggressive low-power entrance and exits upon
usage demands. Due to this nature, Microsoft has implemented a tiered approach to
Modern Standby. The table below from Microsoft highlights this information:
(https://docs.microsoft.com/en-us/windows-hardware/design/device-
experiences/prepare-software-for-modern-standby)
Phase
Description
Tasks Performed
Exited when...
Typical Duration
No-CS phase
Note This is also
the phase where
the device waits
for the sleep
timeout to
elapse.
The system is powered on
and the screen is turned
on. The system is not in
standby.
No standby preparation tasks
are being performed.
The screen is powered
down.
N/A
Connection
phase
The system is checking for
remote desktop
connections.
Determine if remote desktop
session(s) exist.
Begin tracking outstanding
power requests.
There are no remote
desktop sessions
connected.
Zero seconds if no remote
desktop sessions are
connected.
Phase will last until all remote
desktop sessions are
disconnected or have timed
out.
Presence phase
This phase is currently not
used by Windows 8 or
Windows 8.1.