· Active
Directory Users and Computers
· Active
Directory Trusts and Domains
· Active
Directory Sites and Services
· Domain
Security Policy
· Domain
Controller Security Policy
· Schema
Admin
This happens because of the following
reasons:
1. SRV records for Active directory
domains are not registered in DNS Domain Zone.
2. DNS Server couldn't be contacted for
some reason.
3. AA (Host) records for Domain Controller
is missing in DNS Zone.
4. NetLogon service on Domain Controller
has been stopped.
5. Domain Controller is pointing to a
wrong DNS Server.
6. Domain Controller is pointing to a DNS
Server which is far away from DC.
7. DNS Server can't be contacted because
of network congestions.
8. Heavy use of Domain Controller when DNS
Client sends a request to DNS Server to find out domain information. For
example: If an application is running which is using a service account that is
sending DNS Query to DNS Server frequently.
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