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Documents Are Crawled Successfully with No Text Ex

Question​

Why is Netwrix Data Classification (NDC) crawling your documents successfully, but no text has been extracted?

Answer​

Issues with text extraction can have a range of causes. You can find a summary of text extraction errors in the Stats dashboard. Click Details to view a breakdown by type of error.

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Steps to Diagnose Text Extraction Failure​

  1. Enable Collector and OCR tracing and ensure that the log level is set to Errors, Warnings & Info.
  2. Find a document that has failed text extraction and re-index it.
  3. Wait for the Collect Date Time to be updated. This can be viewed from the Page Info screen.
  4. Review the event logs for a detailed error message about the document's collection.

Intermittent Issues and Backup Extraction Method​

If you experience intermittent issues extracting a particular document type, you can enable a backup extraction method through the Content Type Extraction Methods screen in Settings > Text Processing. For example, enabling iFilter as a backup extraction method for Office OLE files may assist with extracting text from problematic documents.

Common Issues​

  • Missing iFilter: If the content type is configured to use iFilters, make sure that the correct iFilter pack is installed on all servers that NDC is installed on.
  • Password Protected Documents: Opening password-protected documents is not currently supported.
  • Corrupt Files: Try opening the file manually to verify it. Microsoft Office documents can sometimes be recovered by opening and resaving the file.