No Sleep option - Standby (S3) The current Device Guard configuration has disabled this standby state.

JD 51 Reputation points
2021-04-14T21:39:47.437+00:00

Here we have a ThinkPad laptop running Windows 10 Enterprise in a domain environment. The Sleep option is missing both from the power menu and is not shown even in the control panel power options.

Running powercfg /availablesleepstates gives:

Standby (S3)
    The current Device Guard configuration has disabled this standby state.

I have googled this sentence but there is not a single reference or mention.

Core isolation is not enabled on this laptop. Device Guard support in BIOS is set to Disabled, and no group policy is set about configuring this feature.

Any idea on how the S3 sleep option can be re-enabled is greatly appreciated. Thank you!

Windows for business | Windows Client for IT Pros | Devices and deployment | Configure application groups
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  1. Teemo Tang 11,471 Reputation points
    2021-04-15T02:09:53.3+00:00

    Run "powercfg /a" at an admin command line.
    Confirm whether your system firmware support Standby (S3).

    Open Group policy editor:

    Computer Configuration -> Administrative Templates -> Windows Components -> File Explorer
    Enable Show sleep in the power option menu

    Computer Configuration -> Administrative Templates -> System -> Power Management -> Sleep Settings
    Enable Allow standby states (S1-S3) when sleeping (plugged in)
    Enable Allow standby states (S1-S3) when sleeping (on battery)

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  2. S.Sengupta 24,951 Reputation points MVP
    2021-05-05T00:51:30.133+00:00

    Start > Run > Gpedit.msc -> Computer Configuration -> Administrative Templates -> System -> Power Management -> Sleep Settings

    There are two options:

    Allow standby states (S1-S3) when sleeping (plugged in)
    Allow standby states (S1-S3) when sleeping (on battery)

    Set them to Enabled.

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