Microsoft Teams has been a cornerstone for business communication across the globe. However, effective July 1, 2025, the classic Teams desktop application for both Mac and Windows will no longer be available. This major shift signals a new era in how organizations will interact with Teams. To ensure smooth operations, it’s crucial to transition to the new Teams application or utilize Teams via the web at teams.microsoft.com.
Impact on Your Organization
Starting from the aforementioned date, users of classic Teams will face access restrictions as the application will be completely obsolete. They will encounter a blocking message preventing access and will not have the ability to bypass this notification to use the classic Teams desktop app. This requires immediate attention to prevent any disruption in business communications.
Steps to Get Ready
Identify and Upgrade
The transition won’t be seamless without proper preparation. Here’s what needs to be done:
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Device Identification Script: Utilize this script to identify devices operating Windows which need an upgrade to the new Teams. While primarily aimed at pre-installation checks, this script is also useful to detect devices running operating systems that are not supported by the new Teams.
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Prompt Upgrades: Expedite the upgrade of all users to the new Teams app as soon as possible. Detailed instructions on switching to the new Teams highlight prerequisites necessary for smooth installation on both Windows and Mac.
Reference for Timelines and Support
For a comprehensive understanding of the timelines concerning end-of-support and availability, Microsoft has published several posts:
- MC783985: Detailed timelines for the classic Teams’ end of support and availability, issued April 2024.
- MC791446: Information pertinent to GCC and GCC High environments, released May 2024.
- MC791445: Focused on Department of Defense (DoD) specific timelines, published May 2024.
Additional Resources
Stay informed with the resources provided, such as the pre-installation script information for the new Teams client. Furthermore, an extensive guide on bulk deployment provides all necessary requirements for target computers.
Transitioning from classic Teams is a significant move, but with timely preparations and utilizing the resources provided, your organization can continue enjoying a seamless Teams experience. Thank you for choosing Microsoft Teams as your communication platform.