How to Check for a Pending Reboot on a host with SCCM client installed

If you have Configuration Manager managed client host, there will be ROOT\ccm\Client namespace in WMI. Class SDKCCM_ClientUtilities has a properties with two possible values:

• RebootPending
• IsHardRebootPending

NAMESPACE	CLASS	PROPERTY	VALUE	PRODUCT	NOTES
ROOT\ccm\Client	SDKCCM_ClientUtilities	DetermineifRebootPending	RebootPending	SCCM	ReturnValue needs to be 0 and this value is not null
ROOT\ccm\Client	SDKCCM_ClientUtilities	DetermineifRebootPending	IsHardRebootPending	SCCM	ReturnValue needs to be 0 and this value is not null

You can use the following PowerShell command to verity the client host needs a reboot or not.

Invoke-WmiMethod -ComputerName localhost -Namespace "ROOT\ccm\ClientSDK" -Class "CCM_ClientUtilities" -Name DetermineIfRebootPending | Select-Object -Property PSComputerName,RebootPending

PSComputerName RebootPending
—————————— ————————-
D00155DD61A6F False

You can also replace localhost with a real computer name to verify a remote host.

References

• https://adamtheautomator.com/pending-reboot-registry-windows/