Clear (Flush) Windows and Linux DNS cache

Set DNS to 8.8.8.8
My Network -> Property -> TCPIP -> Property -> DNS -> OK
Access the website
Change DNS back to the value it should be

Linux

Set DNS to 8.8.8.8


[vuhung@redmine-0.8.7]$ cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 8.8.8.8
#nameserver 192.168.51.1

Access the website
Change DNS back to the value it should be