Your on-premises network contains an Active Directory Domain Services (AD DS) domain. The domain contains a server named Server1 that hosts an app named App1. App1 uses Active Directory authentication.
You have a Microsoft Entra tenant that contains a user named User1. You deploy Microsoft Entra Connect sync and configure password synchronization. User1 fails to authenticate to Appl. You need to ensure that User1 can authenticate to Appl. What should you do?
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