These files are not digitally signed by Microsoft for old versions in a way that guarantees they haven’t been tampered with. Always scan downloads with antivirus software and check file hashes if available.
How to Download Older Versions of Microsoft Teams Microsoft has fully transitioned to the "New Teams" client, making older versions significantly harder to find. As of July 1, 2025, the "Classic" Teams client reached its final end of availability. ms teams old version download
If you are on an older operating system like Windows 10 or macOS Monterey, the official Teams download page may offer a legacy version if it detects your system is incompatible with the latest build. 2. Trusted Third-Party Archives These files are not digitally signed by Microsoft