If you run into issues logging in to your Windows Server installation for the first time, please follow these instructions!
By default, you will need to change your Windows password. Unfortunately Windows has added security which we must disable first.
To do this, we must first disable Network Level Authentication.
You can do this by entering in your IP / domain target and username, and selecting 'Save As' to save the .rdp file to your computer.
Once you have the .rdp file, right click it and open it using Notepad/Notepad++.
At the bottom of the file, please add the following lines:
username:s:Administrator authentication level:i:2 enablecredsspsupport:i:0
After this, save the file.
You will then be able to open the file regularly via RDP, and connect to the server to change your password.
Once your password is changed, remember to either delete this unecessary RDP file, or remove those lines from the bottom of the file.