Frequently Asked Questions

Arduino Web Editor

What OS are supported?

The Web Editor is supported on Windows 10, MacOS High Sierra, Ubuntu last LTS version and Chrome OS. You can find the instructions to compile the Arduino Create Agent for other platforms (e.g. for Raspberry Pi) in its github page.

What browsers are supported?

The Web Editor runs stable on latest versions of Chrome, Firefox, Edge, and Safari.

Which boards can I use in the Web Editor?

You can use all Arduino boards (there’s a complete list in the Help page of the Web Editor).

I am unable to install the plugin...

  • Start by following the getting started guide.
  • Be sure that you have administrator permission on your machine; if the computer you are using is not your own personal computer, ask your IT administrator for an upgraded profile.
  • Sometimes the plugin installation can be blocked by firewall or antivirus software; in the latter case, you can try to add the plugin to your AV whitelist.


I have installed the plugin, but the board is not recognized...

  • After installation, you should wait for drivers to be installed.
  • Try to avoid USB 3.0, since it has been found that it can cause some issues.
  • Remember that some third-party boards are supported in the Web Editor, only with Maker Plan.
  • Try to reinstall the plugin and make sure that you give required permissions (sometimes browsers automatically deny hidden pop-ups).
  • Make sure you are using Arduino Create Editor in the same browser the plugin was installed.


Web Editor says to install the plugin but I already installed it...

  • Check if the plugin is running: you should see the icon in the taskbar and its color should be blue/green. If you don't see the icon, open the plugin by running Arduino Create Agent. If the icon is grey, click on it and then click on Open Plugin.
  • Try to reinstall the plugin and check all pop-up boxes for permissions (pop-ups could be hidden by the browser or blocked by antiviruses).


My board is suddenly not detected by the Editor!

  • Try to reset the board by pressing the reset button on it while it is connected to the computer.
  • Try to clear the cache in your browser.
  • Check if the USB cable you are using is working and it is correctly connected to the computer.


My sketch compiles but not uploads or upload button is grayed out...

  • Check if the plugin is running (you should see the icon in the taskbar and its color should be blue/green).
  • Use Arduino Create in the same browser the plugin is installed.
  • Avoid using USB 3.0, since it can cause some issues.
  • Check if the plugin has been blocked by firewall or antivirus.


Where are stored the files I see in the Web Editor?

They are stored in the cloud, but you can download them on your computer. After downloading a sketch, the downloaded version will not update if you change the same sketch in the Web Editor.

I am unable to import my custom library...

  • Library folders must have a specific structure before being zipped and imported into the Web Editor. Make sure that your custom library folder has the correct sub-folders in it and that metadata are present in the library.properties file (you can find more details here).
  • Try deleting extra file (such as images or pdf documents) since their size may cause issues during the import.


Arduino IoT Cloud

What devices can I use in IoT Cloud?

Currently, the MKR1000, MKR WiFi 1010, MKR WAN 1300, MKR WAN 1310, MKR GSM 1400, MKR NB 1500, Nano 33 IoT, Portenta H7 (M7 core), and ESP8266 boards are supported

My device can't connect to WiFi or to IoT Cloud...

  • Check if your WiFi credentials are correct.
  • Check if you have configured the board you are using: you can see all of your configured devices in the Arduino IoT Cloud).
  • Be sure your device has enough power supply; sometimes peripherals attached to the board requires too much power and the board operations get compromised.
  • Try to update the WiFi firmware if you have not the latest version installed on your board. You can follow this tutorial for updating the firmware of MKR1000 boards or this tutorial for MKR WiFi 1010 boards.


Is the ESP8266 supported by the IoT Cloud?

Yes, it is.