I cannot install MS teams desktop app on Mac

According to the official documentation, Teams application is no longer supported on Mac OS Ventura:

https://learn.microsoft.com/en-us/microsoftteams/teams-client-system-requirements

Teams app is supported on the three most recent versions of macOS. Currently, the three most recent versions of Mac OS are

macOS Tahoe 26.2

macOS Sequoia 15.7.3

macOS Sonoma 14.8.3

https://support.apple.com/en-us/109033

If you cannot update your Mac OS, then you can try to open Teams for Web app in your browser.

https://teams.live.com/v2/

Hi @Lady Lene Cantuja,

Thank you for reaching out to the Microsoft Q&A forum.

Based on your screenshot, the installation of Microsoft Teams failed due to a general installer error on macOS. This is commonly caused by leftover files, permission issues, or how the installer is executed. Please follow the steps below:

Step 1: Remove existing Teams files

1. Open Finder > go to Applications
2. If Microsoft Teams exists, move it to Trash
3. In Finder, press Command + Shift + G, enter: ~/Library/
4. Remove the following folders/files if they exist:

• Application Support/Microsoft/Teams
• Logs/Microsoft/Teams
• Cookies/com.microsoft.teams*
• Preferences/com.microsoft.teams.plist

Step 2: Restart your Mac Restart the device to clear any background installer processes.

Step 3: Reinstall Teams

1. Download the latest installer (.pkg file)
2. Do not open it yet

Step 4: Run installer from Applications (important)

1. Move the downloaded .pkg file into the Applications folder
2. Open the installer from Applications instead of Downloads
3. Proceed with installation and allow any permission prompts

Step 5: Check macOS compatibility Ensure your macOS version is supported by the latest Teams version, as older systems may cause installation to fail.

Hope these steps will help.

The screenshot shows a generic macOS installer failure for the Teams.pkg, but the context only provides concrete remediation steps for Office/Microsoft 365 installers on Mac. The same patterns can be applied to the Teams installer:

1. Delete the current Teams installer package
   • Drag the downloaded Microsoft Teams installer .pkg file to Trash and empty the Trash, as recommended for corrupted Office installers.
2. Re‑download the installer using Safari
   • Use the Safari browser and download the Teams installer again. The Office guidance specifies Safari as the preferred browser when an installer fails or is corrupted.
3. Wait for the download to fully complete
   • Ensure the .pkg download has fully completed before launching it. For Office, the guidance is to wait until the file reaches its full size before opening; the same applies to Teams.
4. Move the installer out of Downloads and run it again
   • Move the Teams .pkg from Downloads to the Desktop, then double‑click it to start the installation, mirroring the Office installer guidance.
5. If the installer still fails, treat it as a corrupted download
   • Delete the .pkg again, empty Trash, and repeat the download with Safari.
6. Verify macOS version and system requirements
   • If installation continues to fail, check that the Mac meets the current system requirements for Microsoft 365/Office apps. The same requirement check is recommended when Office installers repeatedly fail or stop at the same size.

If these steps do not resolve the issue, follow the pattern in the Office guidance and contact Microsoft support for further troubleshooting.

References:

• What to try if you can't install or activate Office for Mac
• Deploy Office for Mac from the Mac App Store