A family of Microsoft word processing software products for creating web, email, and print documents.
Two new Dell Inspiron machines, same spec and preloaded with O/S. One with Win 10 Pro and one with Win 8.1. Both have MS Small Business Premium 365 (2013). Both fully updated and both running same AV, firewall product and settings. No other products/software installed as yet. No 3rd party addins. No changes to configuration.
Win10 + Office 2013 - mail merge (excel > word > outlook) fails.
Win 8.1 + Office 2013 - mail merge (excel > word > outlook) succeeds.
I'm not sure where to look other than at MS configuration/settings?