E-Notebook Enterprise: TYPE_E_LIBNOTREGISTERED error: Unable to cast COM object of type 'Microsoft.Office.InteropWord.ApplicationClass'

Sign & Close Error: ELN error when Sign & Close an experiment:

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Error creating rendition for E-Signatures:
Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' to interface type 'Microsoft.Office.Interop.Word._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00020970-0000-0000-C000-000000000046}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x002801D (TYPE_E_LIBNOTREGISTERED)).
OK
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Note: This error was seen on a newly re-imaged machine.

Platform: ELN 11.0.2.32

 

 

Error (TYPE_E_LIBNOTREGISTERED) was related to OFFICE 2007 Primary Interop Assemblies. After removing it, E-Notebook started to work fine again.