DNS Address Could Not be Found Error

Follow these steps

1. Check your URL first which you have typed
2. Reset the browser and restart
3. Flush the DNS  
    open cmd 
    type ipconfig/flushdns and Enter

4. Release and renew the IP address
    open cmd
    type ipconfig/release and press Enter
    type ipconfig/renew and press Enter

5. Reset Chrome Flags
    type chrome://flags on Chrome URL 
    Click reset all to default

Hope this will fix your problem if not reply me back for other steps