I have Windows 10. I have 4 computers on the same (non-wireless) network and they all show up in Network Places on all computers. On 2 of the computers I cannot access either of them without the ID Required security box popping up. Neither of the computers is password protected. I have Password Sharing switched off in Advanced Sharing Settings and I have gone into Computer Management and changed settings in there to see if that makes a difference. From these 2 computers that won't connect I can connect to any of the other computers on the network with no problem whatsoever. I have disabled anti-virus on both computers. Disabled Firewalls and have now got to the point where I have run out of options. Can anybody give me any other ideas to try?