Having issues joining a computer to a domain? The join operation was not successful access denied error is most common on the following systems: Windows 7, Windows 10, Windows server 2003 and 2008 Server Enterprise R2
Symptoms – User with Administrative privileges are experiencing issues joining a new or existing computer to the domain. The most common errors that will appear are as follows…
The join operation was not successful. The could be because an existing computer account having the name <computer_name> was previously created using a different set of credentials. Use a different computer name or contact your administrator to remove any stale conflicting account.
The error was: Access is denied
The most common methods of resolving this issue are as follows. I’d recommend trying Option 1 first as it has always fixed the issue.
Option 1 –
1. Log onto the computer as a user as a local admin or a user with administrative priviledges
2. Open My Computer or Windows Explorer and Navigate to the following directory C:\Windows\System32
3. Locate then right-click the config folder select –> Properties ( the config properties page is displayed)
4. Select the Security tab
5. Click the continue button if it is present, otherwise locate the Administrators group or the user with Admin privileges ..
6. Select the Administrative group or User Account with Admin rights.
7. Under Permissions for Administrators click the Full control check box
8. Click Apply — if a windows security prompt appears, click Yes
9. If several Error Applying Security Access is denied windows appear click continue on all window pop-ups
10. Click OK on the Permissions for Config page — the page will close
11. Click OK on the config Properties page — the page will close
Now attempt to join the computer to the domain … It should be a success.
Note: After joining the computer to the domain you may receive the following error — “Changing Primary Domain to <xxxxx> failed” — this is a common error and can be ignored. Click [OK], and click [Restart Now]