After creating a new user, assigning it Administrator rights, and logging in to Check_MK, I received an error stating that there was no access to the network topology. This resolved it: 1) SSH to the Linux server running Check_MK 2) Change directory to the Nagvis folder: cd /omd/sites/[YOUR SITE NAME HERE]/etc/nagvis 3) Create a new file called "nagvis-make-admin.sh": sudo nano nagvis-make-admin.sh 4) Paste this into the new file and save it: #!/bin/bash ############################################################################### # # nagvis-make-admin.sh - This script assigns the Administrators role to the # given user. # # Copyright (c) 2004-2011 NagVis Project (Contact: info@nagvis.org) # # Development: # Lars Michelsen <lars@vertical-visions.de> # # License: # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 as # published by