Document preview doesn't work

Symptoms

When you try to preview a document, an error message is shown in place of the expected document content.

Cause

OpenKM uses OpenOffice / LibreOffice to make conversions from the original document format to PDF, which is the required format for the previewer. If the preview doesn't work, the main reason is a misconfiguration or that the OpenOffice / LibreOffice process isn't working as expected. This happens more often on the Windows platform, where the "soffice" process seems to be frozen.

Solution

To solve this problem on Windows, use the "Process Explorer" utility and find the "soffice" process. Kill it and its descendants. Once the process is killed, restart OpenKM.

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