when attempting to add a secondary DNS the primary responds failure to write ns record "The zone does not exist" This is a windows 2008 R2 as is one of the secondary name servers. This started when I was attempting to setup and Exchange 2013 on a 2012 server. (might be unrelated). It started when name resolution stopped and when I checked the DNS server the domain had a red X. In an effort to correct it quickly I restarted it. This seem to fix it as the red x went away and it started working. I then decided to add an additional secondary server. When I attempted to add it to the primary it responded with the zone does not exist. A short time later the secondary failed with zone not being transferred. In looking at the properties I see the security tab has no permissions showing or is unavailable.