Word landscape printing problem

Hope someone can help.
I've created 4 postcards with just text (marketing project).
Page size is A6 (postcard) in landscape. If I select 2 pages per sheet to print it prints in landscape (as ordered). When I ask 4 pages per sheet it's printed (with reduced font) in portrait!
I know it works on A6 cards created as portrait, so why not in landscape?

ensure you have the most up to date version of the printer driver installed, it may be a fixed issue.

Thanks for that Eddie, will remember that for next iem. A friend has solved for me another way (creating coloms). That's - in htis case - an even better solution because of the mail merge I'm planning with it. (now the same reference number comes on all 4 cards per A4)