On Windows versions N and KN there is no Media Feature Pack. MTP and PTP dirvers (wpdmtp.inf) is included in this pack.

Without it you cant send files to and from the Android phone.

Media Feature Pack for N and KN versions of Windows 10 (choose your language)
https://www.microsoft.com/en-us/software-download/mediafeaturepack
or
https://www.microsoft.com/en-US/download/details.aspx?id=48231

Unrecognized device in PTP mode:
USB\VID_2717&PID_FF18&REV_0223&MI_00
USB\VID_2717&PID_FF18&MI_00

Unrecognized device in MTP mode:
USB\VID_2717&PID_FF48&REV_0223&MI_00
USB\VID_2717&PID_FF48&MI_00