SharePoint supports securing / restricting access to files using IRM / DRM / RMS. Similarly there is Azure Information Protection (AIP) and other document encryption services such as Oracle IRM. The Muhimbi Conversion Service does not have the ability to open encrypted content and therefore cannot convert these documents.
To get around this restriction follow these steps:
- As part of your workflow / programming logic move the DRM protected file to a (hidden) Document Library that does not use DRM. This effectively strips DRM from the file. (The exact procedure depends on the IRM product in use)
- Convert this file using one of the Muhimbi Workflow Activities / The Muhimbi API.
- Delete the temporary file.