Epic Games Launch Failed error code LS-0003 on Windows PC

You may encounter the Epic Games Launcher error code LS-0003 when you attempt to open the launcher on your Windows 11 or Windows 10 device and then try to launch a game to play. Let us look at some fixes that may help you.

Depending on the particular game you’re trying to launch, when you encounter this issue, you’ll receive the following similar full error message;

Launch Failed
You must be signed in to launch A Total War Saga: TROY
Please sign in and try again.
Error Code LS-0003
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You’ll encounter this error when you aren’t signed in to your Epic Games account on the Epic Games launcher.

Fix Epic Games error code LS-0003 on Windows 11/10 PC

With the Epic Games Launcher, a Windows application for Windows 11 or Windows 10, PC gamers can easily access the Epic Games Store. In the Store, players can easily purchase and manage games. Sometimes, certain promos are available, such as premium games that are available for free for a limited time, or games that are heavily discounted.

The Epic Games Launcher is not without errors – and error code LS-0003 is one of them.

This error can be solved by making sure that you’ve signed in to your Epic Games account on the Epic Games Launcher before you try to launch your games.

Do the following:

Start the Epic Games Launcher.
Enter the login credentials (your email and password) for your Epic Games account,
Click on Log in Now.
Finally, enter the Two-Factor Authentication in the next screen that appears.

Once you have relogged in, you can launch the game – the game should start normally without the error.

The 2FA will only appear for those who have enabled this feature. Epic Games highly recommends enabling two-factor authentication (2FA) for your Epic Games account for the following reasons:

Increases the security of your account. Even if somebody guesses your password, they won’t be able to access your account.
Required to claim some free games on the Epic Games Store.
Required to send gifts in Fortnite.
Required to participate in Fortnite competitive events such as the Fortnite World Cup.

How to enable two-factor authentication (2FA) for your Epic Games account

To enable two-factor authentication (2FA) for your Epic Games account, do the following:

Head over to the epicgames.com/account page.
In the Account page, on the left pane, click the PASSWORD & SECURITY tab.
Next, under the TWO-FACTOR AUTHENTICATION header, toggle the button for any of the 2FA options you want to enable: