
Well I for one shall be ditching MS Office 2016
After doing a routine network security audit I determined that my non-365 version of Office 2016 had installed a Windows Service that was permanently phoning home chatting to numerous M$ servers.
When I tried to disable this Stasi Service, Office applications such as Excel would then refuse to start up, and there doesn't seem to be anyway around it short of Air-Gapping the host PC.