How to clear DNS cache using DOS
Search for CMD,
R click on CMD, L click Run as Administrator
Type the following:
ipconfig /flushdns , then
press Enter on your keyboard.
, then press Enter on your keyboard.
If the command succeeds,
the system returns the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.
Now type exit, press Enter on your keyboard.
You are now finished.