I can't enter the correct password in Windows Server 2012 when connecting via TeamViewer, what should I do?

Question

macOS

I put Windows Server 2012 on the camp, tested it - everything works. I took it to the pantry, I connect via TeamViewer from a macbook, I try to enter a password in the login window - to no avail. Tried to change languages ​​and so on and so forth - does not help. I even just entered the password in an ordinary input field, copy-pasted in the password field - it does not work. And the on-screen keyboard doesn't help either.
I got up, went and entered it manually from the keyboard - everything is fine, I entered it the first time. So the password is correct.
Then I wanted to enter the password not on the login screen, but somewhere in Windows itself. I go to the control panel, try to change the password, enter the current one - to no avail, the answer is the same - the password is not correct.
I don't see the logic at all. What can be wrong? Where to dig? And then even the on-screen keyboard can not be entered, it's strange like that.
Well, I’ll clarify that I’m connecting from a MacBook with the latest OS X to Windows Server 2012 r2.
I really need help!
Oh yes, I’ll say right away that TeamViewer is a panacea. All my cars are packed there, it's convenient. I would not like to install another utility for VNC. Yes, even the point is more that in TeamViewer I have all the machines in a list at once.

Answer 1

I had such a problem with the seventh version of TW, where the whole trouble turned out to be in the keyboard layout of the local machine that was valid at the time of connecting to the remote machine: if the local one is Russian, when TW expands to full screen, then no matter how you change the layout on the remote machine, the password will still be entered in Russian. Judging by the description, this is not your case, but it's worth checking.
PS I don't know about you, but I like regular RDP much more. My "solution" (a tractor made of crutches, but working at 100%): in three offices, the Internet has a static ip, in all three, ports are forwarded on the modem according to the scheme random_port_1 outside = 3389 to some ip inside the network. As a result, you only need to remember the "rule" of forming an external port number and set passwords more seriously. For security, you can still fasten all sorts of ACLs on the account and on the ip-address of the connecting. Or "stick out" only one remote computer to the Internet, from which you can already access all local ones.