V04 fails silently if Visual C++ Redistributables are missing.
: Navigate to Window > Preferences > Arduino > Platforms and Boards . Select your board (e.g., ESP8266 or ESP32) and wait for the SDK installation to finish before restarting. eclipse hub v04 fix
: If the hub fails to open, reinstall the DirectX End-User Runtimes and C++ Redistributables . V04 fails silently if Visual C++ Redistributables are