A satisfactory alternative for our situation would be to hide the Admin user from all but users in the Admin group. That is a feature that I can see coming in handy for other scenarios as well (for example, someone leaves the organization but for some reason we don't want to remove them from the user directory). I would envision adding a 'Hide' flag or an 'Expiry Date' field to the user profile to determine whether or not the user should be displayed. Does anyone have an idea as to how this could be accomplished? A complementary feature of course would be to prevent the hidden user from logging in. In our case, we are using Active Directory authentication so we can take care of that outside of the xwiki software. -- View this message in context: http://xwiki.475771.n2.nabble.com/Deleting-Admin-user-causes-document-tree-t... Sent from the XWiki- Users mailing list archive at Nabble.com.