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Installing on Windows

Installing FlClashX on Windows: the wizard in your account, the system prompts, and the first connection.

Who it’s for: Windows 10 and 11, 64-bit; you already have an UnderVPN account

  1. Install the app through the wizard

    Start the “Установить и настроить” (Install & set up) wizard in your account and choose your system to get the FlClashX link. Run the downloaded file and finish the installation. If FlClashX will not install, use Happ, then INCY, then Koala Clash.
    Account home screen with the subscription card and the “Установить и настроить” button
    The “Установить и настроить” (Install & set up) button on the subscription card
    The “Выберите вашу платформу” screen with iOS, Android, macOS, Windows, Linux, Apple TV and Android TV tiles
    Pick the Windows tile

  2. Add the subscription

    Press “Добавить подписку” (Add subscription) in the wizard — the profile arrives by itself. If not: “Другое устройство” → “Скопировать ссылку”, then in FlClashX open “Профили” (Profiles), choose “Добавить из буфера обмена” and select the profile.

    How to connect a second device

    The “Отправка ссылки” dialog: a note about opening the link on another device and the “Поделиться ссылкой” button
    The subscription link can be sent over to the computer

  3. Connect for the first time

    Press the connect button at the bottom of the main screen.

Done

Common questions

An MSVCP140.dll error appears on launch
Install Microsoft Visual C++ Redistributable (x64) — aka.ms/vs/17/release/vc_redist.x64.exe — restart the computer and open the app again. The same fixes VCRUNTIME140.dll; if the error stays, send support a screenshot.
The app opens but the connection never comes up
Refresh the subscription (“Профили” → three dots → “Обновление”) and reconnect. Still down — change the country. Make sure no other VPN or antivirus interferes. Nothing helps — delete the profile, add the subscription again and contact support.
Contact supportOpen dashboard
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