When performing a SharePoint Search operation on a SharePoint 2010 environment, the following error appears:
Error: Internal Server Error Exception
- APP01 - Application Server
- WFE01 - Web Front End Server 1
- WFE02 - Web Front End Server 2
03/21/2016 09:58:27.69 w3wp.exe (0x1B50) 0x2120 SharePoint Server Search Query dn1p Medium Filter category FASTMaxNumberOfFilters in the config is in wrong format. Input string was not in a correct format. 0de31de7-6849-402c-bef3-46c375d36ed9
Reviewing the Search Topology it became clear the SharePoint environment was missing the Query Component. There was not a single SharePoint Query Component in the Search Topology.