Earlier this week, Microsoft outlined a host of changes that users might notice once they move to the new Teams. Some involve new ways to access existing tools, as well as several smaller features that will no longer be available: the activity tab in Teams chat, and Adaptive Card-based tabs in personal app tabs, for example.
The timeframe for retiring the classic Teams app seems abrupt, according to Raúl Castañón, senior research analyst at 451 Research, part of S&P Global Market Intelligence, and Microsoft appears to be pressuring customers to update to the new version.
“Some business might be slow to move to the new app because they may have planned to update at a later date, or because they might want to wait until Microsoft has worked out software bugs from the initial versions,” he said.
Classic Teams is one of several Microsoft products heading toward end of support. Windows 10 users will no long receive security or technical support as of Oct.14, 2025, as Microsoft encourges users to migrate to Windows 11. Microsoft will also end support for Office 2016 and 2019 application suites, and related productivity servers, on the same day.
