I have a SharePoint (2010, Standard edition) farm with three site collections. On each site collection is a Word Automation service associated.
Let's assume each sitecollection listen on different ports:
When I try to convert a Word document to PDF with the Word Automation Service via PowerShell it will succeed on port 80, also on port 90.
But not on port 100.
So I checked the permissions for the service and the database. Both are set to the application pool identity.
I didn't get any error in the ULS that helps me out to figure out the problem. Does anyone have an idea that can explain the problem?