I have a user who is having a similar problem. She is trying to Retire her Desktop 'Tower' PC and our Desktop Support Team has set her up with a laptop using Windows 10. Her Desktop and Apps were Saved and Restored to the laptop. This was back in May. She can't retire her Desktop 'Tower' PC because Mail Merge is Not Working on her laptop and she's had Several people assisting her for the last 5 months and nobody can figure out what the problem is.
When she opens up the 'Letter' (word.doc) on her Tower... the Letter opens up with the Merged Data inserted perfectly.
When she opens up the same 'Letter' on her Laptop... she gets the following error message:
D1E31974.doc is a mail merge main document. Word cannot find its header source, P:\TSA\TSA.dat
ALL of us who have attempted to assist her have Confirmed that the header file Is exactly where it says. When we click on 'New Source'... and browser to the location of the header file... as soon as we Select it... it Immediately Fails... as if we Cancelled everything and it's wanting us to start over.
Does Anybody have Any Clues what could be causing this or what needs to be done to resolve this issue. She is having to Keep her Old 'Tower' for the sole purpose of creating the Daily Letters.