ESO Error 334 Lost Lobby Connection Fix

🔍 What is Error 334?

According to the official ESO help site, Error 334 means “Lost Lobby Connection”.
In practical terms, players report getting kicked back to the login screen or character selection after loading a zone / changing characters / queueing for dungeons.
It appears to often be triggered by some kind of network interruption or the game failing to maintain connection to the server / “lobby”. Many reports note it happens after a patch, or when changing zones / loading large maps.

Here are steps recommended by the developers and community—try in order, and stop when you find something that works:

Check the official service alerts (for ESO & the platform) to ensure the server / megaserver isn’t down.
Make sure the game/client is fully patched / updated. An outdated client can trigger connection issues.
Power-cycle your network: turn off console/PC, router/modem for ~30-60 seconds, then power back on. This can clear transient connection issues.
Open or ensure the required outbound ports are enabled in your router (see the help article). Sometimes NAT or blocked ports cause the “lost lobby” condition.

If you are using a VPN, disconnect it. Some players report error 334 occurs when playing through a VPN.
Disable all add-ons / extensions in the game. If disabling add-ons stops the error, you can re-enable them one by one to find the culprit.
Add the game executable (and launcher) as exceptions in your antivirus/firewall. Some security software may interfere with the network handshake.
Reset the ProgramData folder for the game (for PC) — sometimes corrupted files or cached data cause connection issues.

Some players reported switching to a different internet provider or connection type (e.g., mobile hotspot vs home ISP) temporarily fixed the issue, suggesting it might be an ISP routing / network backbone issue.
Others note the error is more frequent after major game updates or during peak server load/time zones, which suggests the game’s server infrastructure or zone‐transition code might be stressed.
If none of the fixes help, you may need to submit a support ticket with the ESO support team. Provide details: your platform, server region, what you were doing when the error occurred (zone change, dungeon queue, login), your connection type (wired/wireless), any VPNs, and your ISP if you suspect routing issues.