How to rejoin computer into domain

Nilesh Kamble
Nilesh Kamble used Ask the Experts™
on
I had this question after viewing Cannot rejoin computer to domain when MS LAPS is used.

Hello Experts,

We have LAPS set up and now we are facing some issues.
Computers gives trust relationship error and after removing it from AD, we can not add them into domain again. We don't have password to login in Laptop with Administrator account.

How can I resolve it?
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Shaun VermaakSenior Consultant
Awarded 2017
Distinguished Expert 2018

Commented:
You can still lookup password using LAPS admin interface
Nilesh KambleSr.System Engineer

Author

Commented:
Thanks for your comment but LAPS admin and also attribute does not show the password.
Shaun VermaakSenior Consultant
Awarded 2017
Distinguished Expert 2018
Commented:
Then perhaps it was never managed via LAPS. Reset password with password reset tool
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Nilesh KambleSr.System Engineer

Author

Commented:
My computer is out of domain and i am not able to login into computer because I don't know the password...how could resetting password will help me login into my computer.
Jeremy WeisingerSenior Network Consultant / Engineer
Commented:
Reset the local admin password I think is what Shaun was saying. http://pogostick.net/~pnh/ntpasswd/bootdisk.html
IT Engineer
Distinguished Expert 2017
Commented:
There is a more than 10 options to reset local user /admin password

https://4sysops.com/archives/three-ways-to-reset-a-windows-vista-admin-password/
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
You can also try this

Run Active Directory Users and computer on your DC
Navigate to your domain
Right click on Computers -> New -> Computer
Put you computer name (Remember that Pre-Windows 2000 field must have up to 8 characters without special characters)

Save

Restart computer and try log-on as Domain Admin

After that you can change membership and remove domain admin account from local computer
Nilesh KambleSr.System Engineer

Author

Commented:
There were duplicate name created in AD and previous one lose secure channel and there were no password found in the GUI. So, decided to reformat the OS(it's not a solution yet). But for time being we have to do this.Thanks to all who put efforts to resolve this issue..

Thanks..

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