The SMS Agent Host service has stopped. Configuration Manager requires this service to record and access necessary data. This condition does not repair itself and must be resolved before Configuration Manager can resume some of its core functions.
This condition typically occurs when:
The client computer is shut down or is restarted.
Configuration Manager is being upgraded with Configuration Manager hotfixes or Configuration Manager service packs.
The SMS Agent Host service is manually shut down.
One of the dependent components, such as Windows Management Instrumentation (WMI), is shutdown.
Verify that the SMS Agent Host service was stopped due to routine or scheduled maintenance.
If the SMS Agent Host service is not already started, start it. Starting it starts all of its dependent components, such as WMI.
For more assistance, see a list of additional support options in the support section of the Configuration Manager Web site at Support for Configuration Manager 2007.