In a notable shift regarding its Windows 10 strategy, Microsoft has extended support for Microsoft 365 applications on the operating system until 2028. This decision, made quietly, raises questions about the motivations behind the change, especially as several significant updates remain pending.
Pending Changes and Delays
Among the anticipated updates is the unified management of Microsoft 365 applications, including Teams and Outlook, which has been placed “on hold” for the time being. Originally, Microsoft had aimed for a general availability rollout in July 2024, but that timeline has now shifted.
Additionally, another substantial change announced in November 2024 regarding the New Outlook for Windows and Outlook for the Web has also faced delays. Microsoft indicated that the OWAEnabled policy parameter would no longer be checked, with future access to mailboxes relying solely on the OneWinNativeOutlookEnabled parameter. Details surrounding this transition can be found in a dedicated article from the company.
The rollout for these changes was initially slated to commence in January 2025 and conclude by February 2025. However, as the timeline has evolved, Microsoft has provided an updated schedule via the Microsoft 365 Admin Center portal.
Updated May 8, 2025: We have updated the timeline below. Thank you for your patience.
We are changing how you enable or disable the new Microsoft Outlook for Windows and Microsoft Outlook for the web.
When this will happen:
General Availability (Worldwide, GCC): We will begin rolling out late June 2025 (previously late April) and expect to complete by mid-July 2025 (previously mid-May).
For those with access to the Microsoft 365 Admin Center portal, further information can be found under message ID MC922623.
