Troubleshooting Tip for Debugging Crawl Issues in SharePoint 2010

I recently came across a very nice troubleshooting methodology when I was trying to debug some authentication issues that were occurring during a SharePoint 2010 crawl.  I was getting some errors and also having difficulty getting the information I needed out of the crawl log to some other issues that were occurring.  Strangely enough, enter Fiddler to the rescue (www.fiddler2.com).

 

I’m sure most everyone is familiar with Fiddler so I won’t bother explaining it here.  The trick though was to get it to capture what was happening during the crawl.  I found a very slick way to do this is to configure Fiddler as a reverse proxy for the crawl account.  The instructions for configuring Fiddler as a reverse proxy can be found here:  http://www.fiddler2.com/Fiddler/help/reverseproxy.asp.  The way I used it was as follows:

 

  1. Log into my crawl server as the crawl account.
  2. Configure Fiddler to be a reverse proxy as described above.
  3. Start Fiddler
  4. Start a new crawl.

 

I had isolated my trouble sites into a separate content source.  So once I followed these steps I was able to see each request from the crawler to that content source, how it was authenticating, and what was happening.  Overall it proved very useful in understanding much more clearly what was going on during the crawl of those sites.

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