Visual C++ Redistributable Package
From Commander4j Wiki
The mySQL Workbench will quit if you don't have this installed - don't panic !
Simply perform a search on the Microsoft download site and you will find what you need to download as shown below.
Download the version appropriate for your version of Windows.
Now run the installer you have just downloaded.
Once this has installed click on the Finish button and then return to installation of mySQL Workbench.