This problem continues to exist in leaked build 10147. 1. Map a network drive in This PC as Z: 2. Working flawlessly so far. I can browse all my files. 3. Go to settings and under Login, create 4 digit PIN to be used to login, instead of a regular password. 4. Reboot the PC. 5. BAM!! Network drive is now not accessible. 6. I can ping it through Command prompt but it just doesn't map no matter what. 7. I try to map it by typing IP address in explorer bar but still fail. 8. Then again I go to settings, and under Login, reset PIN. Then instead of entering new PIN, close the window to disable PIN completely and switch to login by Microsoft account password. 9. Reboot the PC. 10. Now the network drive can be mapped and works as before. I just can't believe a bug like this is seeping through all the builds released so far. I tried all the solutions but when PIN is enabled, the network drives just fail to mount no matter what Edit 1: Sorry for pic from old build. Same issue is present in latest build 10147. Edit 2: This problem has been solved. Go to Pg 4 and see the new way to mount Network drives in my post.