After upgrade SP-Crawl Error: The SharePoint item being crawled returned an error when attempting to download the item.

Hi All - After the upgrade, I am getting SP-Crawl Error for certain links. I check the Crawl component has proper permission.

Google is showing some article like

http://blog.karstein-consulting.com/2012/04/20/error-in-crawl-log-the-sharepoint-item-being-crawled-returned-an-error-when-attempting-to-download-the-item/

not sure if this resolution is referring to 2010 and/or 2013. 
I checked the registery editor. I couldn't find 14.0 under the Office Server.

Any clue?

Regards,

Khushi

Khushi