As reported by Neowin, Microsoft has just notified users “about the future state of the new Teams client on older Windows 10 and 11 versions. Soon, the app will start nagging users to update their operating systems to remain supported, and in a few months, Teams will stop working altogether.”

January 15, 2025. Millions of PCs running Windows 10, the most popular desktop operating system on the planet, are already counting down the days until October 14, 2025 when Microsoft will cut off support for the software.

"On new Teams, users on OS versions that are not supported will receive in-app notifications to encourage them to update their device to a supported OS version. A version that is too far out of date will become incompatible with the service and the Desktop client will be blocked until the OS is updated."