A family of Microsoft word processing software products for creating web, email, and print documents.
Had the same problem either. After check to support.office.com its says there 4 add-in that may cause the problem:
ABBYY FineReader, Broadcom Send-to-Bluetooth, Intel Send-to-Bluetooth, and KingSoft’s PowerWord. I just uninstalled WPS KingSoft and this buggy message things gone for goods.