ERROR_CLUSTER_UPGRADE_FIX_QUORUM_NOT_SUPPORTED 0x80071756

Error code 5974 · HRESULT 0x80071756

WINDOWS

Updating the cluster functional level failed because the cluster is running in fix quorum mode. Start additional nodes which are members of the cluster until the cluster reaches quorum and the cluster will automatically switch out of fix quorum mode, or stop and restart the cluster without the FixQuorum switch. Once the cluster is out of fix quorum mode retry the Update-ClusterFunctionalLevel PowerShell cmdlet to update the cluster functional level.

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_UPGRADE_FIX_QUORUM_NOT_SUPPORTED is a Windows error code (system error 5974, returned as HRESULT 0x80071756) reported by Windows. Its official message is: “Updating the cluster functional level failed because the cluster is running in fix quorum mode. Start additional nodes which are members of the cluster until the cluster reaches quorum and the cluster will automatically switch out of fix quorum mode, or stop and restart the cluster without the FixQuorum switch. Once the cluster is out of fix quorum mode retry the Update-ClusterFunctionalLevel PowerShell cmdlet to update the cluster functional level.”

How to fix ERROR_CLUSTER_UPGRADE_FIX_QUORUM_NOT_SUPPORTED

  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_UPGRADE_INCOMPATIBLE_VERSIONSERROR_CLUSTER_UPGRADE_RESTART_REQUIREDERROR_CLUSTER_UPGRADE_IN_PROGRESSERROR_CLUSTER_UPGRADE_INCOMPLETEERROR_CLUSTER_RESOURCE_IS_REPLICA_VIRTUAL_MACHINEERROR_CLUSTER_AFFINITY_CONFLICTERROR_CLUSTER_RESOURCE_IS_IN_MAINTENANCE_MODE

Source: Microsoft WinError.h

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