I lost access to teh network admin in a WordPress multisite install. This is the gas which got me back in control of it all!

Apparent I caused problems with the Network admin permissions and access when I changed the admin username. When I reverted back to the admin username all access returned to normal.

Here are all the associated fields the the site_admins and network admin access:

1. wp_sitemeta -> admin_email = email address for the user account that you want to make the Super Admin (check wp_users table)
2. wp_sitemeta -> admin_user_id = user ID for the user account that you want to make the Super Admin (check wp_users table)
3. wp_sitemeta -> site_admins = a:1:{i:0;s:5:”admin”;} (note that the number 5 corresponds to the number of characters in the username in quotes.)