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Troubleshooting WordsProcessing

This article provides solutions to common issues that you may observe when working with the WordsProcessing library.

Issue: "NotSupportedException: The requested security protocol is not supported." when importing HTML with images in Windows Server

You get this error when importing an HTML file containing images in a Windows Server environment that does not have .NET 4.8 installed. The required TLS security protocols are missing and are causing the observed behavior.


You can choose one of the following:

  • Install .NET 4.8 on the Windows Server.
  • Subscribe to the LoadImageFromUri event to load external resources that are not included in the HTML.
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