Visual Studio Installer will be useful to update Visual Studio to the most recent release. Open Visual studio installer from Wndows start menu.
Fig 1: Visual Studio Installer - Open from Start Menu
Once it is opened it shows if there are any updates available. Click on update button to update your visual studio to the latest version.
Fig 2: Visual Studio Installer - Updates available
Fig 3: Visual Studio Installer - Updating Visual Studio
Once updates are installed, use Launch button to Open Visual Studio.
Fig 4: Visual Studio Installer - Launch Visual Studio