1. In your start menu, launch Software Center. 
  2. In Software Center, look for a New App called "Teams Clear Cache" by CPPR IT and click into it. 
  3. Click the blue install button. 
  4. Give it a moment to download and run the script. A blue window may appear which is expected. 
     
  5. All your windows will be forced minimized to draw your attention to Close Teams. Click the close programs button here to close Microsoft Teams.
  6. You will see a installation progress window show up and then disappear. 
  7. When you see this Window you can click okay and re-launch Teams manually from your Taskbar or Start menu.