Windows error 4207 (ERROR_WMI_GUID_DISCONNECTED): meaning

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the requested data block was removed or disconnected after its earlier registration.

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ERROR_WMI_ALREADY_ENABLED	ERROR_WMI_SERVER_UNAVAILABLE

ERROR_WMI_GUID_DISCONNECTED

A previously known block has left the active provider set

This status describes a lifetime change: a WMI data block that had been available is no longer connected to the provider. It differs from ERROR_WMI_GUID_NOT_FOUND, which is a lookup failure for the current registration, and from a server-unavailable condition, where the WMI service path itself cannot be reached.

Typical causes are device removal, driver unload, provider deregistration, or a registration update that removes a GUID. Consumers should discard cached assumptions about the old block and re-enumerate the provider state instead of repeatedly sending requests against a retired registration.

Checks after a disconnect

Correlate the status with PnP removal, driver unload, provider restart, and registration-update traces.
When removing a block, use the documented registration-update path and make dependent event or data consumers release their references.
For a long-lived client, re-resolve the provider and instance only after the target device is known to be present again.

References

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