ERROR_IO_PENDING 0x800703E5

Error code 997 · HRESULT 0x800703E5

WINDOWS

Overlapped I/O operation is in progress.

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_IO_PENDING is a Windows error code (system error 997, returned as HRESULT 0x800703E5) reported by Windows. Its official message is: “Overlapped I/O operation is in progress.”

How to fix ERROR_IO_PENDING

  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_IO_DEVICEERROR_IO_INCOMPLETEERROR_IO_PRIVILEGE_FAILEDERROR_IO_REISSUE_AS_CACHEDERROR_NOACCESSERROR_OPERATION_ABORTEDERROR_SWAPERROR

Source: Microsoft WinError.h

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