Unable to authenticate with DOMAIN\username

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  • eyal gross

    We have Active directory 2008r2. We want to upgrade to 2016.
    Our users are Authonticated throw web application
    When user tring to authonticate to 2016 with domain\username he get error of unknown username or bad password .
    Authonticate with UPN ([email protected]) format is ok.
    How can i configure The 2016 Domain controllers to able to authonticate with domain\username ?

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