ERROR_UNEXPECTED_MM_CREATE_ERR 0x8007022C

Error code 556 · HRESULT 0x8007022C

WINDOWS

If an MM error is returned which is not defined in the standard FsRtl filter, it is converted to one of the following errors which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.

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_UNEXPECTED_MM_CREATE_ERR is a Windows error code (system error 556, returned as HRESULT 0x8007022C) reported by Windows. Its official message is: “If an MM error is returned which is not defined in the standard FsRtl filter, it is converted to one of the following errors which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.”

How to fix ERROR_UNEXPECTED_MM_CREATE_ERR

  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_UNEXPECTED_MM_MAP_ERRORERROR_UNEXPECTED_MM_EXTEND_ERRERROR_UNEXPECTED_OMIDERROR_CANT_TERMINATE_SELFERROR_CANT_WAITERROR_PROFILING_AT_LIMIT

Source: Microsoft WinError.h

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