While crawling SSL enabled web applications in SharePoint 2010, it may fail giving the following error.

Error message: An unrecognized HTTP status was received. Check that the address can be accessed using Internet Explorer. (WebExceptionStatus TrustFailure The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

This happens mostly when we implement self signed certs or certs from untrusted authorities in the web servers. In order to avoid the error message and to successfully crawl contents, make the following changes in farm level search settings in Central Administration.

  1. Go to Application Management > Search Service Application Settings > Farm Search Administration
  2. Change the setting “Ignore SSL warnings” from No to Yes.