Microsoft has given itself a seemingly impossible race against time. With almost exactly a year to run before Windows 10’s unpopular end-of-life hits users in October 2025, Windows 11 is still failing to hook the hundreds of millions more users it needs to prevent a generational support nightmare coming true.

"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 A version that is too far out of date will become incompatible with the service and the Desktop client will be blocked until the OS is updated."