I am using Office365 ProPlus 2016 (business) on my Windows PC, and had Covenant Eyes installed. After a month of everything being fine, Office started asking to activate, yet when I tried to do so it kept throwing an error (0x80072F8F) and saying it failed to contact its server. The Office 2016 programs would not allow me to "activate later" or anything like that, so I was effectively locked out of Office as long as this issue remained. The problem was not resolved by completely reinstalling Office, but when I uninstalled CovenantEyes all issues magically disappeared - it didn't even ask me to activate any more. It seems clear that there is a conflict between CovenantEyes' filtering system and Office365's activation system. At present the only solution I've found is to not use Covenant Eyes, so I welcome any suggestions!