I ran into an issue that was driving me nuts after installing Windows 10 on 2 computers. I could not access any of my network drives from either of those machines. It kept telling me my password was incorrect, but it wasn't. But I would go to a Windows 8 or Windows 7 machine, enter the username and password and it would connect first try.
Normally when you connect to a network drive it prompts you for your username and your password.
On windows 10 in the username box instead of entering just t