When performing an offline join, which is the first system on which the djoin.exe needs to be run is offline domain join.
Offline domain join is a new feature in Windows 7 and Windows Server 2008 R2 that lets you join a computer to a domain without contacting a domain controller directly. This feature can add computers to a domain when network connectivity is not general. When a computer joins a domain, trust connections change between both the computer and the Active Directory domain. Before Windows 7 and Windows Server 2008 R2, there was no application to make these relationship changes on the computer unless it was directly connected to the field controller at the time it joined the domain. Windows 7 and Windows Server 2008 R2 include the application djoin.exe located on %SystemDrive\Windows\System32\djoin.exe to perform this task. The general procedure for using offline domain join is simple:
Run the text file on the computer using djoin.exe and when it reboots, it will be joined to the domain.
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