Describe the problem

After updating to the latest release (Arduino IDE 2.0.0-rc7) there is no board available in the boards manager or when selecting a port. Neither the default Arduino boards nor the boards from the Additional boards manager URLs are available.

This image shows that both lists are empty.

To reproduce

• Open the Arduino IDE
• Go to the boards manager

Or:

• Open the Arduino IDE
• Select the dropdown menu with "X No board selected"
• Select the correct port from this list

Expected behavior

A list of available boards should appear in the designated fields.

Arduino IDE version

Version: 2.0.0-rc7-nightly-20220610

Operating system

Windows

Operating system version

21H1

Additional context

Restarting the IDE did not solve the issue. Installing the nightly build also didn't solve the issue.

Additional boards manager URLs: http://arduino.esp8266.com/stable/package_esp8266com_index.json,https://dl.espressif.com/dl/package_esp32_index.json
(removing these and restarting the IDE also didn't solve the issue)

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details