SharePoint 2010 Error (in CoreResultsWebPart::OnInit) when searching

After installing a fresh SharePoint 2010 standard farm I kept on receiving this error when I try to search something in the search center:

CoreResultsWebPart::OnInit: Exception initializing: System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader() at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e)

After trying the following actions:

  • ensuring that hotfix 976462 is installed
  • ensuring that the “SharePoint Server Search” and “Search Query and Site Settings Service” services are running, both are up and running
  • removing and reinstalling the search application
  • ensuring that the application pool is assigned correctly
  • restarting the timer service
  • restarting the search service
  • rebooting

Still no luck, than I figured that the Search webpart wasn’t activated. So activating the site collection Search Webpart solved this issue.

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