>Hi,
>
>Do you know if the username used by Active Directory (AD) is unique in the AD? This is the username (along with the password) that a person enters into his/her PC when logging in.
>
>TIA
>
>UPDATE. I asked this question a customer IT and she said it is unique.
Yes, the username must be unique as it's an attribute used for signing in.
There's a separate "Display Name" attribute which appears in many places in Windows. That can be completely different from the username and I believe they do not have to be unique.
https://www.zubairalexander.com/blog/the-strange-way-in-which-active-directory-implements-the-full-name-attribute/
Regards. Al
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