|Connectivity to Office 365||Impact of change||Technical implications||Recommended actions|
|Office 365 ProPlus or mainstream Office clients||No change||Plan for regular updates to stay within support window||No action required|
|Office clients outside mainstream support||client connectivity no longer available||Office desktop client applications, such as Outlook, OneDrive for Business and Skype for Business clients will not connect to Office 365 services||Upgrade to current version of ProPlus or mainstream Office clients or use browser or mobile apps|
|browser and mobile apps||No change||No change||No action required|
|Office desktop clients outside mainstream support not using Office 365||No change||Set your own desktop upgrade timeline, in line with your on-premises server upgrades. When planning to move to Office 365 services, an Office client upgrade will be required||No action required|
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