In August, Microsoft will start rolling out changes to Microsoft Office 365 licensing technology to make it more reliable and resilient. These changes will help simplify activation management and streamline the Office 365 activation experience for users. Users will still sign-in to activate Office 365 on their devices, and if single sign-on is enabled, Office 365 will automatically pick up the credentials and activate Office 365. As part of your subscription, users can still install and activate Office 365 apps on up to five PCs or Macs, five tablets, and five smartphones. Previously, users who reached this limit were prompted to deactivate an existing install before activating Office 365 on a new device. Going forward, Office 365 will automatically sign the user out of the user’s least recently used device when the user exceeds the limit, eliminating unnecessary friction. In August, Microsoft will start slowly rolling out these changes to commercial customers on Monthly Channel. No additional action is required on your part.
For further information on the Microsoft Office 365 license activation changes, please visit: https://techcommunity.microsoft.com/t5/Office-365-Blog/Office-365-Client-Licensing-and-Activation-Improvements/ba-p/763694.