Windows doesn't tell you which program is using a file and prevents you from renaming, moving, or deleting a file while it is in use.

To use it, go to File > Open > Browse and select the Word file that's not printing correctly. Then, click the tiny arrow next to the Open button and select Open and Repair.

Fix Word cannot save or create this file Normal.dotm error occurs when saving an Office document by following the suggestions laid down in this post.