Please make sure that your internet connection is working. Another common reason is that a firewall is blocking Yousician's access to the Internet.
In case of any technical issues, you can also do a complete reinstallation.
- Uninstall the app.
- Delete folders: C:\users\username\AppData\Roaming\Yousician Launcher\Yousician.app\ and C:\users\username\AppData\LocalLow\Yousician (the folder directory may vary depending on your Windows username.) AppData folder might be hidden so you might need to do this:
- Run a Disk Cleanup to remove temp files, and
- Reinstall the app.
Then run the Yousician Launcher.exe again.
Mac OS X
Delete the app, reboot your device and reinstall Yousician.
Reinstallation does not delete your progress in app.
Please also check Yousician system requirements.