ERROR_ALREADY_WAITING 0x80070770

Error code 1904 · HRESULT 0x80070770

WINDOWS

The specified printer handle is already being waited on

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_ALREADY_WAITING is a Windows error code (system error 1904, returned as HRESULT 0x80070770) reported by Windows. Its official message is: “The specified printer handle is already being waited on”

How to fix ERROR_ALREADY_WAITING

  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_ALREADY_THREADERROR_ALREADY_FIBERERROR_ALREADY_INITIALIZEDERROR_ALREADY_REGISTEREDERROR_INVALID_FORM_SIZEERROR_PRINTER_DELETEDERROR_INVALID_FORM_NAME

Source: Microsoft WinError.h

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