NAV2013R2 Installation in Server.Web Server Error

Hi All,
When i install NAV 2013 R2 in the server where NAV 2013 is installed, receiving a error :(

Web Server Components
Web Server Components
Fatal error during installation.

Is there any way to solve this error?

Thanks & Regards,

Check the event log to get more details on the error…

Provide more details.

Ya i have checked. Error as " The crawler could not communicate with the server "

The start address sts4://navtest:5854/contentdbid={424e892b-2a4c-42b1-ac48-ad0d5f6df0e0} cannot be crawled.

Context: Application ‘Serve_search_queries_over_help_content’, Catalog 'Search’


The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly. (0x80041206)