How to Fix Epic Games Store Installation or Activation Failed Error Code II-E1003 or E10-0

Are you excited to dive into the gaming world with Epic Games, only to be greeted by frustrating error codes like II-E1003 or E10-0? Don’t worry! We’ve got you covered. 

In this post, we’ll walk you through the steps to fix this game installation glitch and product activation failed error on Windows PC or Mac computer, allowing you to get back to gaming in no time. So let’s jump right in and tackle these issues head-on!

What Is Epic Games Store’s Error Code II-E1003 or E10-0?

Epic Games

In case you didn’t know yet, error Code II-E1003 occurs during installation and typically indicates a problem with your network connection or Epic Games launcher.

On the other hand, error Code E10-0 usually appears when activating a game and suggests an issue with your Epic Games account or the game files.

Troubleshooting Steps to Fix Error Code II-E1003 Epic Games Store Launcher Couldn’t Download & Install the Game


Follow these steps to fix the error code II-E1003 when launching newly downloaded games on Epic Games Store through the launcher: 

Check your internet connection

Ensure you have a stable and reliable internet connection by resetting your router/modem or connecting via an Ethernet cable.

Disable VPN or proxy settings

Turn off any virtual private network (VPN) or proxy server connections that might interfere with Epic Games’ servers.

Temporarily turn off antivirus software or firewalls

Overprotective antivirus software or firewall settings on PC or Mac sometimes block Epic Games from installing correctly. Temporarily disable them and try again.

Clear the Epic Games launcher cache

Open the launcher settings, find the cache-clearing option, and restart it to see if it resolves the issue.

Reinstall the Epic Games launcher

Uninstall the launcher, download the latest version from the official website, and reinstall it. Run the installer as an administrator to ensure proper installation.

How to Troubleshoot and Fix Error Code E10-0 Product Activation Failed on Epic Games Store


Follow the steps below to fix the error code II-E100 when downloading, installing and activating games through the Epic Games Store: 

Verify your Epic Games account

Make sure your Epic Games account is valid and properly linked to your game library. Double-check your login credentials and try logging in on the Epic Games website.

Check the game files

Open the Epic Games launcher, navigate to your library, and select the problematic game. Choose “Verify” or “Repair” to check and repair any corrupted or missing game files.

Update your graphics drivers

Outdated graphics drivers can cause compatibility issues. Visit the manufacturer’s website and download the latest drivers for your graphics card.

Temporarily turn off third-party software

Some third-party programs, such as overlays or optimization tools, can conflict with Epic Games. Disable them temporarily to see if it resolves the issue.

Contact Epic Games Support

If all else fails, reach out to Epic Games’ customer support. Please provide them with the error code and a detailed issue description for further assistance.

Encountering error codes like II-E1003 or E10-0 while installing or activating games can be frustrating. However, with the troubleshooting steps outlined in this guide, you can overcome these obstacles and continue your gaming journey. In case of persistent issues, don’t hesitate to contact Epic Games Support for personalized help. Happy gaming!

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