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My sketch compiles but does not upload or upload button is greyed out...

  • Updated

If you have this issue, please take a look at this common easy fixes:

  • Check if the Arduino Create Agent is running. On Windows, look for an Arduino icon in the taskbar. On macOS and Linux it will be located in the menu bar. The icon should be either black or white depending on your system, not greyed out. If it is greyed out, rick-click and select Run Agent.

  • Use Arduino Cloud in the same browser the Create Agent is installed.

  • Avoid using USB 3.0, since it can cause some issues.

  • Check if the Create Agent has been blocked by firewall or antivirus.

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