Windows 10 support will end on October 14, 2025, with a deadline of January 15, 2025, for older versions to access Microsoft Teams. Users with unsupported versions will receive notifications to upgrade, as those running Windows 10 versions older than 21H2 will be blocked from using Teams. Microsoft is offering Extended Security Updates (ESU) for Windows 10 at a cost, with pricing set at £48.19 for the first year, £96.39 for the second year, and £192.78 for the third year. This option extends support until the end of 2028 but is primarily aimed at enterprise users, with details for average users to be announced later. Currently, Windows 10 has about twice as many users as Windows 11.