My "Rebuild search indexes" aborts and produces this error:

"System.ArgumentException: it doesn't make sense to have a field that is neither indexed nor stored".

but which field, which Item ID? without the specifics..

Is there a more comprehensive diagnostic? I'm in the /logs directory but nothing significant.

I relaunch, and now I've got a different exception:

"RebuildSearchIndex|System.IO.IOException: Cannot overwrite: C:\Sitecore\AJN\Data\indexes__system_1a0w.fdt at Lucene.Net.Store.FSDirectory.InitOutput(String name) "

Not sure what the next step is? Thank you for any insight!

1 Answer 1


You can check the CrawlingLog and SearchLog to see if there is any more detailed information (assuming you are checking the default log right now). If there isn't, you can turn on VerboseLogging which will give you a ton more information to follow up on: https://doc.sitecore.net/sitecore_experience_platform/82/setting_up_and_maintaining/search_and_indexing/indexing/the_search_and_indexing_log_files. (Different Sitecore versions may enable that slightly differently). You should be able to find the field with the issue in the logs after that.

You can also check your /sitecore/admin/showconfig.aspx page to see the list of defined fields in each index. In all likely-hood, one of those things is not like the others and it may help you pinpoint which config in the directory is causing the issue.

  • Thank you Rondel for your answer, I set VerboseLogging=true and have confirmation of the setting in the log. However at the moment it's still reluctant to spit information, closer to deaf and dumb than verbose ;) Jul 24, 2018 at 20:10
  • For /sitecore/admin/showconfig.aspx, I've got an XML page currently if I paste this from the Control panel. But maybe there's some assumed know-how, or maybe I should see a "Showconfig" button or tab in the control panel? Jul 24, 2018 at 20:13

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