The item may be too large or corrupt. You may also verify that you have the latest version of this IFilter.

Problem:
SharePoint search didn’t return search results on Large lists and libraries. On analyzing search crawl log, found the error logged: “The item may be too large or corrupt. You may also verify that you have the latest version of this IFilter.”.

The item may be too large or corrupt. You may also verify that you have the latest version of this IFilter.

Solution: 

Make these registry changes in Index server and restart SharePoint search service. Once done, trigger the crawl again.

Key
Default Value
New Value
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\DedicatedFilterProcessMemoryQuota
104,857,600
209,715,200
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\FilterProcessMemoryQuota
104,857,600
209,715,200
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\FolderHighPriority
50
500

Thanks to Technet forums!
https://social.technet.microsoft.com/Forums/en-US/sharepointsearchlegacy/thread/138e2e68-9bf7-4a1c-9519-ace6a78ddaa5

Salaudeen Rajack

Salaudeen Rajack - SharePoint Expert with Two decades of SharePoint Experience. Love to Share my knowledge and experience with the SharePoint community, through real-time articles!

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