Not sure where to post, hopefully this is the correct place.
We have gotten the Office 365/2016 subscription. We use the download from our vender, Setup.X64.en-us_O365BusinessRetail. Each every single time I have gone to activate/register, it fails (cannot contact server). On a whim, I restarted/rebooted our untangle router (NOT a bridge). This resolved the problem. It is our only router/firewall. After the first time this happened, and I got it to work, I have only done Office 2016 installs near close of business, so I can reboot the untangle router without causing disruption. I was hoping v14 would resolve this issue, however it did not. Our untangle is still Build: 14.0.0.20180809T183301.113f85e615-1stretch, Kernel: 3.16.0-4-untangle-686-pae. This is the only real problem in over 3 years.