Windows Server: Remove Computer from Domain
REMOVE COMPUTER FROM DOMAIN
Important Note: Prior to performing the below steps to remove a computer from a Windows Server Domain you will need to 1st have local admin access credentials to the computer.
Ideally you want to be logged into the computer as a local machine administrator:
Step 1. Click Start button, then point to Computer.
Step 2. Right-Click Computer, then click Properties.
Step 3. Under the Computer name, domain, and workgroup settings, click Change Settings.
Step 4. Then hit Change, change the Member of Option to Workgroup, hit OK.
Step 5. You will be prompted the administrator’s account, type it.
Step 6. Then restart your computer.
If you are NOT logged into the computer as a local machine administrator:
Step 1. Log into the computer as a domain administrator.
Step 2. Create a local machine administrator user and set password.
Step 3. Then follow steps above.