Convert doc/docx to PDF php/IIS using OfficeToPDF

Windows server 2012 IIS 7 PHP convert doc/docx to PDF.  

I can successfully use OfficeToPDF from the command line as expected but when I try to get it to work with php through exec, no luck.

I have tried changing the DOM permissions as outlined here =>

When the script runs I can see Word open in task manager but the script will just hang until I kill the word process.
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swrockAuthor Commented:
I was able to get it working by changing the COM identity from "launching user" to "interactive user" as suggested here =>

Works perfectly now.

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