When uploading sketches to Arduino UNO R4 WiFi using Arduino development tools on Windows, you may encounter these errors:

• Arduino IDE 2 / Arduino CLI: No device found on <COM port>, Failed uploading: uploading error: exit status 1
• Cloud Editor: Executing command: exit status 1, No device found on <COM port>
• Arduino Cloud (Setup Device): We were not able to configure your device, Executing command: exit status 1

The underlying issue^[1] was identified and a patch^[2] was included in Arduino CLI 0.33.1, Arduino IDE 2.1.1, and Arduino Cloud Agent 1.3.2.

To use your UNO R4 WiFi on Windows, make sure your software is up to date:

• If you are using Arduino IDE 2, press Ctrl + Shift + P to open the Command Palette and run the Arduino: Check for Arduino IDE Updates command, and look for a pop-up notification in the bottom-left corner. Alternatively, download and install the latest version.
• The Cloud Agent updates to the latest version automatically. Check your Arduino Cloud Agent version to verify that you’re running 1.3.2 or later. If it’s not updating, try restarting the application, or manually installing the latest version.
• If you are using Arduino CLI, run arduino-cli upgrade.

If you’re still see errors when uploading, check Errors when uploading a sketch.