SharePoint 2010 Search Propagation Communication Error

This alert condition indicates that a Crawl Component for the search application could not communicate with the query server. Possible causes: the crawl component might have expired credentials, network issues are preventing communication, or the the query server may be unresponsive. The crawl does not progress and appears to stall. The crawl log shows no new crawled documents. Users may be unable to view applications in their browsers, or the service may otherwise be unavailable.

Last modified April 17, 2020