I have updated some url's and files in robots.txt file to block url's and files from google search results but, still files displaying in search results. As per a suggestion from a site I tried to update the robots.txt by below steps. In Google Webmaster tools, Health - Fetch as Google - type the url and click the fetch button. but, still files displaying in search results. Note: in Google Webmaster tools, Health - Blocked URL's - robots.txt file - downloaded date looks two dates back.