The only major restriction imposed on Windows 10 users of Office 365 is Microsoft restricting Office 365. This is a striking moment since most people still haven't upgraded to Windows 11. Although Office 365 is always one of the most popular cloud services, actual use is still slowly being phased out on Windows 10 in accordance with Microsoft's requirement.

Changes in the Thaw of Office 365
It has announced that, from now on, Office 365 features and security updates will be available only for Windows 11. This means that some new feature or security advantage being brought to Office 365 will not be enjoyed, in all likelihood, by customers using Windows 10 for some time to come.
What was the Reason Behind Such Changes Made by Microsoft?
The major objective behind any change is to push the addition of users to the Windows 11 platform, the most recent OS developed by Microsoft and also the most secure. It further aims at making its environment secure and modern by quite literally marrying its important services such as Office 365 with Windows 11.
What About Those Who Remain Under Windows 10?
It has said that all on Windows 10 should go to Windows 11 as soon as possible. While security updates will cease in October 2025, it will not affect some functionalities of critical applications, such as Office 365, thus reducing productivity and generating inconvenience at considerable levels in terms of official or enterprise dynamics.

Impact for Enterprises
Enterprises that still run Windows 10 and heavily depend on Office 365 will need to come up with a migration roadmap to Windows 11 as soon as possible, since this new policy poses a threat to both enterprise security and productivity.
It has turned off some of its advanced features of Office 365 for Windows 10 and thus made users migrate to Windows 11. Though necessary for both security and modernization, it is also a huge signal for Windows 10 users that an upgrade is urgent.
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