ERROR_UNKNOWN_PRINTPROCESSOR 0x80070706

Error code 1798 · HRESULT 0x80070706

WINDOWS

The print processor is unknown.

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_UNKNOWN_PRINTPROCESSOR is a Windows error code (system error 1798, returned as HRESULT 0x80070706) reported by Windows. Its official message is: “The print processor is unknown.”

How to fix ERROR_UNKNOWN_PRINTPROCESSOR

  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_UNKNOWN_PRINTER_DRIVERERROR_INVALID_SEPARATOR_FILEERROR_UNKNOWN_PORTERROR_IO_DEVICEERROR_NOT_FOUNDERROR_CANCELLEDERROR_NETWORK_UNREACHABLEERROR_LOGON_FAILURE

Source: Microsoft WinError.h

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