Install the current PC version of Lost Ark from its official Steam listing. Check the current requirements and available drive space, sign in to the Steam account you intend to use, add Lost Ark to that Library, choose a Steam Library folder, and let Steam complete the game and first-launch components.
Open Lost Ark's official Steam listing and review the current operating-system, processor, memory, graphics, DirectX, network, and storage requirements. Use the live listing because installation size and requirements can change.
Choose a drive with enough free space for the current listed game size plus updates. Confirm that the drive already contains, or can contain, a Steam Library folder before starting a long download.
3
Sign in to the intended Steam account
Open the official Steam client and sign in to the account you will use for Lost Ark. Confirm the account and region are correct before adding the game; do not download a separate installer from a third-party site.
4
Add Lost Ark to the Library
From the official Lost Ark Steam page, choose the available play or install control. Complete any Steam account prompt, then confirm that Lost Ark appears in Library.
5
Choose the install location
Select an existing Steam Library folder on the prepared drive. Review the displayed space requirement in Steam before confirming, because the current client value is the relevant installation figure.
6
Wait for Steam to finish
Monitor Lost Ark in Steam Downloads and allow the game, updates, and required first-launch components to complete. Do not launch a partial download or move files manually while Steam is applying them.
7
Launch from Steam and keep security enabled
Choose Play from the Lost Ark Library page. Allow Easy Anti-Cheat to start. If it reports an exact EAC error, use Lost Ark's EAC troubleshooting rather than disabling security or anti-cheat.
If Steam shows insufficient space, choose another Steam Library folder or free space through normal storage management. Do not delete an incomplete Lost Ark folder manually while Steam is managing it.
If Lost Ark is unavailable for the account or region, do not use a VPN, unofficial mirror, or copied game files to bypass availability. Ask Steam or Lost Ark Support why the account cannot access the game.
ⓘ Sources and verification
Checked against official documentation on . Scope: Windows.
If a button or setting has moved after an update, use the linked official help page to find its current location.
