ERROR_CLUSTER_OBJECT_ALREADY_USED 0x80071730

Error code 5936 · HRESULT 0x80071730

WINDOWS

An attempt to use the specified cluster name failed because an enabled computer object with the given name already exists in the domain.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_CLUSTER_OBJECT_ALREADY_USED is a Windows error code (system error 5936, returned as HRESULT 0x80071730) reported by Windows. Its official message is: “An attempt to use the specified cluster name failed because an enabled computer object with the given name already exists in the domain.”

How to fix ERROR_CLUSTER_OBJECT_ALREADY_USED

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

ERROR_CLUSTER_TOO_MANY_NODESERROR_CLUSTER_MAX_NODES_IN_CLUSTERERROR_CLUSTER_EVICT_INVALID_REQUESTERROR_CLUSTER_RESOURCES_MUST_BE_ONLINE_ON_THE_SAME_NODEERROR_NONCORE_GROUPS_FOUNDERROR_FILE_SHARE_RESOURCE_CONFLICTERROR_CLUSTER_NOT_INSTALLED

Source: Microsoft WinError.h

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