Windows 2012 r2 "wrong login or password"

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Hi, I can't connect to my administrator session on windows 2012 r2 server. The error message displayed say "wrong login or password". Of course, I sure about my identifacation informations. In the dos console (with a boot CD) I modified the account informations, I created news accounts users (with net commands). It like had none impact ... Same problems at the boot after ctrl + alt +suppr command pour l'ouverture de session. I didn't found solution on the web, on this tech microsoft website.
Is someone had ever meet this situation ? Thanks !

Windows Server 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
1,538 questions
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
12,259 questions
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  1. Dave Patrick 426.2K Reputation points MVP

    What roles are installed?

  2. Thameur-BOURBITA 32,596 Reputation points

    It seems that the keyboard language changed when you type the password.

    Try using virtual keyboard to type the password.

    Please don't forget to mark helpful reply as answer

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