Prior to the deadline, users will receive multiple reminders to install the upgrade. If Office isn't upgraded by the deadline, the upgrade is applied automatically. If any Office programs are open, they'll be closed, which might result in data loss.
We recommend that you set the deadline at least a week in the future to allow users time to install the upgrade.
If you enable this policy setting, you set the deadline in the format of MM/DD/YYYY HH:MM in Coordinated Universal Time (UTC). For example, 05/14/2014 17:00. To set the deadline in the device's local time add "Local" to the end of the deadline. For example, 05/14/2016 17:00 Local.
If you disable or don't configure this policy setting, no deadline is set.
You can use this policy setting with the Local Source Upgrade setting to upgrade your users from a local location.
Important: This policy setting only applies to Office products that are installed by using Click-to-Run. It doesn't apply to Office products that use Windows Installer (MSI).