On your Paradox Account page, granted that you own Stellaris https://accounts.paradoxplaza.com/profile/games

On the confirmation page after buying Stellaris on Paradox Store





Or here: http://launcher.paradoxplaza.com/windows_launcher

Greetings all!We've put together a short FAQ about our new Direct Download feature for Stellaris on the Paradox store!Paradox is releasing games on many different outlets and will continue to do so. Adding our own technology for distributing our games lets us co-create the experience around multiplayer, cloud saves, social features and so on together with our fantastic community. This does not mean we will stop releasing games on multiple platforms, rather, we want to enhance the experience of playing Paradox games regardless of which context you choose to play them.Stellaris on Steam now uses Paradox technology to facilitate multiplayer sessions. Login with your Paradox Account and play MP as usual. This also means that we have added some basic social features in the game which involves friends list and chat.Forum nicknames now also function as nicknames in our friends system. Simply search for a nickname to send an invite to connect.If you bought the Steam version in the Paradox Store, you should have access to the Paradox version automatically. Check https://accounts.paradoxplaza.com/profile/games Create a Paradox Account and connect it to your Steam account to get access to the direct download version of Stellaris. The account connection needs to stay active in order for you to keep your access to the game.Try running the launcher as an administrator. If that doesn't work, please open a support ticket. We will grant you access to both a direct download and the Steam version of Stellaris. You need to connect your Steam account to your Paradox Account. Navigate to https://accounts.paradoxplaza.com/profile/game_keys and press Activate to redeem your Steam copy of the game.We have a curated list of mods in the Paradox Launcher for quick install, but you are also free to mod your games as usual by manually placing the mod files in the game folder. We are looking into how to improve modding for both creators and players and will seek input from our community to develop it further.Playing the Paradox version of Stellaris will give you the same achievements as in the Steam version of the game. You can find all of your achievements on https://accounts.paradoxplaza.com/profile/achievements