Loading and Saving VEXcode 123 Projects on a Chrome Browser

A project can be loaded and saved in VEXcode 123 in the following ways:

Create a New Project

A new project opens when VEXcode 123 is launched. But, a new project can also be opened from the File Menu.


Select ‘New Blocks Project’ from the File Menu.


Note: when creating a new project, a prompt will appear asking to save if the current project has not already been saved. See the ‘Save Using the File Menu’ section of this article for details on how to save a project.

Load an Existing Project


Open an existing project by selecting ‘Load From Your Device’ from the File menu.


Use the device’s interface to navigate and open your existing project. VEXcode 123 will only allow you to open files with a .123blocks file extension.

Open an Example Project


Open an example project by selecting ‘Open Examples’ from the File menu.

Rename a Project


To rename a project, select the Project Name window.


Enter the project name, and select ‘Rename.’

Save Using the File Menu


Open the File menu and select ‘Save To Your Device.’


Navigate to your device’s Downloads folder, you'll see a file with a .123blocks extension. This means your project has been successfully saved.

Common Issue when Loading/Saving

A common issue when using VEXcode 123 project files (.123blocks) is trying to select the .123blocks file to be opened directly by the operating system.


If you try to open a VEXcode 123 project file (.123blocks) by double clicking it, it will show the following error message:


All VEXcode 123 project files (.123blocks) can ONLY be opened within VEXcode 123. View the ‘Load an Existing Project’ section from this article for more information.