Use djoin to join a remote computer to a domain

Allows you to join a PC to a domain even when not on the domain.  Useful when prepping a PC for deployment before bringing it to customer site.

You'll need remote access (RDP, Anydesk, etc.) to customer site.

On a domain-attached computer at the customer's site, do:

djoin /provision /domain customerdomain.local /machine new-machine-name /savefile c:\temp\djoin-data.txt

Copy the  djoin-data.txt file to the local PC you're prepping and do: 

djoin /requestODJ /loadfile djoin-data.txt /windowspath %SystemRoot% /localos

That's it.  When you power up the PC at the customer site, the PC is already AD joined and users will be able to logon with their AD creds.