we had 4 DNS servers in Organization and i configured in PC IP Configurations as Follows:
192.168.1.60
192.168.1.61
192.168.1.62
192.168.1.63
8.8.8.8
So all the local requests were going to Local DNS and Internet to 8.8.8.8
Last week i demoted 192.168.1.61 Successfully. and removed secondary DNS entry (192.168.1.61) from IP Configurations.
Problem is i cannot resolve the local Servers, even i cannot ping the domain name.
ipconfig /Flushdns Works for sometime but problem comes again.
Internet is working fine.
Nslookup working fine.
Problems only with few computers having access to internet.