RPC_S_SEC_PKG_ERROR 0x80070721

Error code 1825 · HRESULT 0x80070721

WINDOWS

A security package specific error occurred.

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

RPC_S_SEC_PKG_ERROR is a Windows error code (system error 1825, returned as HRESULT 0x80070721) reported by Windows. Its official message is: “A security package specific error occurred.”

How to fix RPC_S_SEC_PKG_ERROR

  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

RPC_S_UUID_LOCAL_ONLYRPC_S_NOT_CANCELLEDRPC_S_NOT_RPC_ERRORERROR_CANCELLEDERROR_NETWORK_UNREACHABLEERROR_LOGON_FAILUREERROR_FILE_CORRUPTERROR_DISK_CORRUPT

Source: Microsoft WinError.h

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