When compiling or uploading, the following error may occur:

Compilation error: Missing FQBN (Fully Qualified Board Name)

The error occurs if no board has been selected.

Note that a board needs to be selected even if you’re not uploading any code (i.e. clicking Verify).

Select board

With IDE 2, you can use the board selector menu:

• Connected boards that were identified by Arduino IDE will appear in the list.
• To manually select the board, or to select a board without connecting it, choose Select other board and port.

Alternatively, use the Tools > Board menu option:

See Select board and port in Arduino IDE to learn more.

Install missing boards

If you do not have the associated board core installed, you may receive the following pop-up.

In this case, choose Yes to install the required core.

To learn more about board installation, see Add boards to Arduino IDE.