No.3 Download and install Media Feature Pack for N and KN versions of Windows 10
In order to transfer files from your computer to your device you need to use MTP protocol.MTP protocol is related to Windows Media Player,and some versions of Windows 10 don\'t have Windows Media Player and support for related technologies such as MTP protocal.If your version of Windows 10 doesn\'t recognize devices,download and install Media Feature Pack for N and KN versions of Windows 10 from here.
No.4 Use a different USB cable
If you aren\'t using the original cable that came with your phone,you might want to consider swithcing your USB cable.In some rare cases,some USB cables are just designed for powering and not for file transfer,so you might have one of those USB cables.In order to be sure,try using a different USB cable,or try connecting your phone to different computer using the same USB cable.
No.5 Uninstall Android drivers
Sometimes you might not have the latest drivers,or your drivers might not be properly installed,so in order to fix issues with Android devices and Windows 10,it is recommended to uninstall your Android drivers.
1.Connect your device to PC and launch Device Manager.
2.Locate your device,which is located in Other Devices or in Portable devices section,but the location might be different on your computer.
3.Right click the device and select Uninstall.
4.After the drivers been uninstalled,disconnect your device.
5.Reconnect it again,and wait for Windows to install its drivers again.
6.Check if your device is now recognized.