I am trying to create a win 10 boot usb, but the rufus program asks for an email and password, but will not accept the center's email and password.
Would you mind using the Rufus application that came in the package you downloaded?
Insert your empty 8 GB USB drive into the computer and when installed, click on Rufus 3.1.
Rufus is the program that creates the bootable USB drive and expands or writes the Win 10 ISO files onto the drive so it is bootable and can begin the installation of Windows on the target computer.
Rufus also comes preconfigured, so all you need to do is follow the directions and make no additional changes.)
After double-clicking on Rufus, it will start to open and ask if you would like to check for updates:
Answer no, and Rufus will continue to open
For additional information, please visit the FamilySearch.org Help Center and search for:
Windows 10 Pro 64-bit for family history centers