ERROR_BAD_DEV_TYPE 0x80070042

Error code 66 · HRESULT 0x80070042

WINDOWS

The network resource type is not correct.

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_BAD_DEV_TYPE is a Windows error code (system error 66, returned as HRESULT 0x80070042) reported by Windows. Its official message is: “The network resource type is not correct.”

How to fix ERROR_BAD_DEV_TYPE

  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_BAD_NET_NAMEERROR_NETWORK_ACCESS_DENIEDERROR_NETNAME_DELETEDWSAEACCESWSAEADDRINUSEWSAECONNABORTEDWSAECONNRESETWSAETIMEDOUT

Source: Microsoft WinError.h

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