To update Teamviewer  to the newest version follow the directions below. 

1. Look for Teamviewer Icon in system tray. 

2. RT click on the Teamviewer Icon 

3. Choose check for new version. 

4. If there is a new version you will get an update box. Click update. 

5. Update will run. 

6. Final step click "ok" to allow teamviewer to finish update.