ERROR_DS_POLICY_NOT_KNOWN 0x800721AA

Error code 8618 · HRESULT 0x800721AA

WINDOWS

At this time, it cannot be determined if the branch replication policy is available on the hub domain controller. Please retry at a later time to account for replication latencies.

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_DS_POLICY_NOT_KNOWN is a Windows error code (system error 8618, returned as HRESULT 0x800721AA) reported by Windows. Its official message is: “At this time, it cannot be determined if the branch replication policy is available on the hub domain controller. Please retry at a later time to account for replication latencies.”

How to fix ERROR_DS_POLICY_NOT_KNOWN

  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_DS_DRA_OUT_SCHEDULE_WINDOWERROR_DS_LDAP_SEND_QUEUE_FULLERROR_DS_DISALLOWED_IN_SYSTEM_CONTAINERERROR_DS_NO_SERVER_OBJECTERROR_NO_SITE_SETTINGS_OBJECTERROR_NO_SECRETSERROR_NO_WRITABLE_DC_FOUND

Source: Microsoft WinError.h

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