I have Windows 7 "server" setup with users, groups and shares. All the Win7 computers can access the shares with out any problem. I just added a new Win8.1 computer and can see the shares but gets invalid user or password trying to access them. The user has the correct permissions and can access from his Win7 computer. It is in the same workgroup and I have tried disabling the firewall, tried setting the Network Location to Public and Private, but nothing helped. Does anyone has a fix for this?