This tutorial assumes you are already logged in to your Joomla admin panel
Â
Joomla does not allow you to block or delete a super administrator directly, so you will first need to change the user's group
1) Click Site
 
2) Then User Manager
Â
Let's see what happens when we try to delete a super admin
Â
3) Check the box next to the user

4) Then click Delete
Â
Joomla will give you an error message

Â
Now let's change the user's group
Â
5) Select the user

Â
Scroll right
Â
6) Click Edit
 
7) Choose a new group for the user

Â
Scroll right
Â
8) Click Apply
 
Â
Now that the changes have been applied, we can either block or delete the user. Let's see how to block a user first
Scroll down
Â
9) Check Yes next to Block User
 
Â
Scroll up and right
Â
10) Click Save
 
Â
The user has now been blocked as is indicated by this red icon

Â
Now let's see how to delete a user
Â
11) Check the box next to the user

12) Then click Delete
Â
The user has now been deleted

Â
This is the end of the tutorial. You now know how to block or delete a super administrator in Joomla