Handling the most singular domain failures

A colleague was out on a business trip for a long time. Just got back recently, finding me and asking to rejoin the company's domain, I immediately asked my colleague to open the Remote Assistance system within our company, to connect his desktop remotely to my PC, and then, right click: "My Computer"---"Properties"--"computer name"--- "Change" and then follow the company's new naming convention to get a computer name, fill in the company's domain, click "OK", and then enter: Delegate a username and password with domain permissions ... Pop up after a few seconds:

Because the user is anxious to use the computer, I also too lazy to think the question, gave the user the PC to change a new computer name, then again operated the addition domain process,

This time the following pop-up prompts:

A happy moment. ok~~ remotely restarts the user's computer and disconnects remote connections to the user.