If you are currently participating in the Microsoft Teams Preview program with Office 365, you are probably using the Windows Desktop Teams application for that experience.
In my opinion, the desktop application is the best way to experience the preview of Microsoft computers; however, it has a deficiency, since it lacks the ability to disable it so that it does not start automatically when you turn on your computer.
I suspect this will be addressed in a future application update, but in the meantime, you can use the Start tab in the Windows Task Manager to disable the application from automatically starting. Disabling this capability does not affect the capacity of the applications that will be used on your system.
To do this, just open the Task Manager by searching for it on your system and then selecting the search result that lists the Task Manager desktop application.
- Once the application opens, select the Start tab.
- Look for Update.exe with the Microsoft Teams icon, highlighted in the previous screenshot, and then select the Disable button in the lower right corner of the Task Manager window.
- Alternatively, you can right-click Update.exe and select Disable in the context menu.
- Once you have disabled Update.exe for Microsoft computers, you can exit Task Manager.
- In the future, Microsoft Teams will not automatically start on your system, but it is still available to start manually from the Start menu.
You must uninstall two items for all users on a machine to completely uninstall Teams, so be sure to follow all the steps.
- Exit Teams by right-clicking on the Teams icon in the taskbar and selecting the Close window.
- In Windows, click the Start button,> Settings> Applications.
- In Applications and features, search for “computers.”
- Highlight Microsoft Computers, then select Uninstall.
- A box will appear, then select Uninstall again to confirm. A new box will appear, asking Do you want to allow this application to make changes to your device? Select yes
- Now select Teams Machine-Wide Installer, click Uninstall. Then follow the same process described in step 5.