ERROR_INVALID_MESSAGENAME 0x800704C1

Error code 1217 · HRESULT 0x800704C1

WINDOWS

The format of the specified message name is invalid.

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_INVALID_MESSAGENAME is a Windows error code (system error 1217, returned as HRESULT 0x800704C1) reported by Windows. Its official message is: “The format of the specified message name is invalid.”

How to fix ERROR_INVALID_MESSAGENAME

  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_CANCELLEDERROR_INVALID_PASSWORDNAMEERROR_INVALID_MESSAGEDESTSTATUS_STACK_OVERFLOWSTATUS_DLL_NOT_FOUNDSTATUS_ENTRYPOINT_NOT_FOUNDSTATUS_DLL_INIT_FAILEDSTATUS_HEAP_CORRUPTION

Source: Microsoft WinError.h

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