Fortnite AS-3 error means the Epic Games Launcher is reporting no connection. Epic calls AS-3 a general network configuration error and specifically recommends checking whether IPv6 is enabled on the Windows network adapter. That gives this problem a more useful first fix than changing Fortnite’s graphics settings or redownloading the game.
Begin with the check that matches the exact message shown on your screen. Changes to unrelated Fortnite graphics, keybinds or account details won’t fix a launcher or connection failure.
What AS-3 actually means
AS-3 is a launcher connection failure rather than a numbered Battle Royale matchmaking error. It can appear before you reach the game and doesn’t mean you’ve been banned from Fortnite. Epic describes it as a generic network configuration issue. Check whether other sites and online services work, then follow the Windows IPv6 settings Epic recommends for this exact message.
Enable IPv6 on Windows 11
Press the Windows key, search for Control Panel and open it. Choose Network and Internet, Network and Sharing Center and Change adapter settings. Right-click your active Wi-Fi or Ethernet adapter and choose Properties. Ensure Internet Protocol Version 6 (TCP/IPv6) is checked, then select OK. Epic identifies this as the first configuration test for Fortnite AS-3 error on Windows 11.
Fortnite AS-3 error: enable IPv6 on Windows 10
Open Settings > Network and Internet > Status, then select Change adapter options. Right-click your connected adapter and choose Properties. Make sure Internet Protocol Version 6 (TCP/IPv6) is enabled and save. Don’t disable IPv4 or modify unrelated adapter services. If the checkbox was already selected, move on to connection and security checks rather than turning every networking feature off.
Test Epic Games Launcher again
Close the launcher fully, including its tray process, and start it once the adapter setting is saved. Try opening the Epic Games Store and signing in before launching Fortnite. If the store now works but Fortnite doesn’t, you may have a separate game installation or anti-cheat issue. Fortnite AS-3 error should be retested at the launcher itself, where the no-connection message appears.
Fortnite AS-3 error: check security software carefully
Epic says antivirus interference can contribute if enabling IPv6 doesn’t help. Check your antivirus logs or firewall prompts to see whether the legitimate launcher is blocked. Use the manufacturer’s recommended application exception if you establish that cause. Temporarily changing protection for a diagnostic test should be done carefully and restored immediately; don’t leave Windows without security software.
Restart networking and remove interfering proxies
If the error persists, restart the router and PC, then retry without a VPN or proxy that could interfere with Epic connectivity. Check whether Windows reports internet access and test a normal website. Epic links to connection troubleshooting after the IPv6 and antivirus steps. Fortnite AS-3 error can appear because the launcher cannot reach its services even while some other applications still work.
Fortnite AS-3 error: differentiate AS-3 from game-server outages
Check status.epicgames.com for Epic Games Store or login incidents. A launcher connection error and a Fortnite matchmaking outage are different symptoms. If Epic reports a service problem, wait for recovery rather than changing working adapter settings repeatedly. If the status is healthy but only your computer fails, local network configuration becomes more likely.
When to contact Epic Support
Include the exact AS-3 message, Windows version, whether IPv6 was enabled, and the result of trying another internet connection. Never share a password or authentication code. Epic can investigate further once you have checked its documented IPv6 and network steps. Reinstalling Fortnite itself won’t repair an Epic Games Launcher that can’t get online.
Related Guides
Fortnite technical support and launcher fixes.
Official source: Epic Games support information.
