ERROR_NONCORE_GROUPS_FOUND 0x80071731

Error code 5937 · HRESULT 0x80071731

WINDOWS

This cluster cannot be destroyed. It has non-core application groups which must be deleted before the cluster can be destroyed.

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_NONCORE_GROUPS_FOUND is a Windows error code (system error 5937, returned as HRESULT 0x80071731) reported by Windows. Its official message is: “This cluster cannot be destroyed. It has non-core application groups which must be deleted before the cluster can be destroyed.”

How to fix ERROR_NONCORE_GROUPS_FOUND

  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_OBJECT_ALREADY_USEDERROR_FILE_SHARE_RESOURCE_CONFLICTERROR_CLUSTER_TOO_MANY_NODESSTATUS_DLL_NOT_FOUNDSTATUS_ENTRYPOINT_NOT_FOUNDSTATUS_DLL_INIT_FAILEDSTATUS_HEAP_CORRUPTIONSTATUS_STACK_BUFFER_OVERRUN

Source: Microsoft WinError.h

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