We released MiiTel Phone Desktop v.3.9.4.

As we previously announced, we updated the EV certificate used to code-sign MiiTel Phone Desktop in this version.

As a result, the Microsoft Defender SmartScreen warning, “Windows protected your PC,” may appear when you install or update MiiTel Phone Desktop on Windows.

For details, see “Effective November 5, 2026: A warning screen may appear when installing or updating MiiTel Phone Desktop on Windows.”

If you have any questions, please contact us.