Method 1 (easy and safe)
- Open up "Control Panel | System and Security | System"
- In the dialog click on "Advanced system settings" (requires Admin rights)
- The "System Properties" dialog will be displayed
- Make sure you are in the "Advanced" register
- In the "User Profiles" section click on "Settings"
- The "User Profiles" dialog is displayed
- Select the account. Hit Delete.
Method 2 (slight variation of method 1)
- Start | Run
- sysdm.cpl
- switch to register "Advanced"
- In the "User Profiles" section click on "Settings"
- The "User Profiles" dialog is displayed
- Select the account. Hit Delete.
The greyed out button possibly means that the registry hive has not been released by the operating system, as pointed out by @joeqwerty in the comments.
Method 3 (manual and prone to errors)
Delete the C:\Users\[ACCOUNT]
directory. That leaves some registry entries behind that have to be manually deleted as follows.
- Open Regedit with Administrator Permissions (Runas Administrator)
- Select the
HKEY_USERS
branch
- Search for the Domain Account without the domain (e.g. login = DOMAIN\ACCOUNT then search for ACCOUNT)
- Keep on searching until the status bar shows
Computer\HKEY_USERS\[SID]\Software\Microsoft\Windwos\CurrentVersion\Explorer\Shell Folders
- There should be a large list of your ACCOUNTs folders e.g.
C:\Users\ACCOUNT\Desktop
You are in the right HKEY_USERS\[SID]\Software\Microsoft\Windwos\CurrentVersion\Explorer\Shell Folders
branch if the ACCOUNT in "Shell Folders" matches the ACCOUNT you just manually deleted form the C:\Users\[ACCOUNT]
directory. This branch [SID] can be exported and/or deleted to clean up the last of the user profile.