#on dc
djoin /provision /domain ad.lemmerich.eu /machine k-l380 /savefile c:\provision.txt

Copy the file over to the client

#on client
djoin /REQUESTODJ /LOADFILE "D:\provision.txt" /WINDOWSPATH %WINDIR% /LOCALOS

If you see the error The offline domain join request failed. Error 0xa9d., Then add –% (two dashes) after djoin. That is, it will be something like that.

djoin --% /requestODJ /loadfile D:\provision.txt /windowspath %systemroot% /localos

• https://docs.microsoft.com/en-us/windows-server/remote/remote-access/directaccess/directaccess-offline-domain-join
• https://www.dtonias.com/offline-domain-join-active-directory/