Describe the problem

When starting Arduino IDE 2.1.1, it tries to restore the last opened project. If that project is on a shared folder that is now unavailable, the IDE never starts. It does not show an error message. It does not even open a window.
Starting the IDE from CMD prints this:

Failed to start the electron application.
[Error: UNKNOWN: unknown error, stat '\\192.168.1.20\Share\Test\main\main.ino'] {
  errno: -4094,
  code: 'UNKNOWN',
  syscall: 'stat',
  path: '\\\\192.168.1.20\\Share\\Test\\main\\main.ino'
}

I had to remove the workspace-object from %AppData%\arduino-ide\config.json, then it started again.

To reproduce

1. Create a new sketch
2. Save it on a shared folder (e.g. on a NAS or on a folder shared from a different computer)
3. Close Arduino IDE
4. Unplug your network cable / disconnect WiFi
5. Start Arduino IDE

Expected behavior

The IDE should start up, and show a new, empty project (possibly the default sketch that's also shown when clicking on File -> New Sketch). It should ideally show a warning that the previous project (insert path here) could not be reopened.

Arduino IDE version

2.1.1

Operating system

Windows

Operating system version

Windows 10

Additional context

Additional reports

• https://forum.arduino.cc/t/ide-2-0-4-not-starting/1096064

Related

• https://forum.arduino.cc/t/ide-2-1-1-wont-load/1158292
• https://forum.arduino.cc/t/arduino-2-0-ide-does-not-launch/1059988

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