To uninstall Teams, you need to uninstall two items. Follow the steps below to fully uninstall Teams
- Quit Teams by right-clicking the Teams icon.
- In Windows, click on the Start button > Settings > Apps > Installed Apps.
- Search for "teams" and then click on the 3 dots “…” to uninstall both Microsoft Teams and Teams Machine-Wide Installer.
* You may find only one item, no problem, just uninstall what you have found and go to the next step.
* In case a message appears asking: Do you want to allow this app to make changes to your device? Select Yes.
* Next, step is to clear the Teams Cache in case any corrupted information is still stored after the uninstall.
Navigate to -> %localAppdata%\Packages (copy and paste this address into your explorer)
Search for a folder named MSTeams_XXXXXXXXXXXXX (The X's are a random string of characters) and delete it completely.
To install Teams
Download it here: https://go.microsoft.com/fwlink/?linkid=2281613&clcid=0x409&culture=en-us&country=us
Second attempt installer in case first link does not work: https://go.microsoft.com/fwlink/?linkid=2196106
Just execute the file, no other configuration needed.