Fix FFXIV Error 90006

Final Fantasy XIV players frequently encounter **Error 90006**, which signals a lost connection to the game servers. This issue disrupts gameplay, especially during peak times or expansions like Endwalker and Dawntrail. Common triggers include network instability, permission problems, firewall blocks, and server overload. This guide provides detailed, step-by-step solutions tested across PC, PS4, PS5, and Xbox platforms to restore your connection quickly.

Understanding Error 90006 in FFXIV

Error 90006 appears as “Connection with the server is lost,” often kicking you from raids, duties, or the login screen. It stems from network disruptions where your client can’t maintain a stable link to Square Enix’s data centers. Unlike crashes, this is purely connectivity-related, making it fixable without reinstalling the game in most cases.

Key symptoms include:

• Sudden disconnections during high-traffic events like patches or expansions.
• Frequent logouts even on stable home networks.
• Inability to queue for content or join worlds.
• Console-specific hitches on Wi-Fi setups.

Server-side congestion is a major culprit, particularly post-launch, but local fixes resolve 80% of cases.

Quick Fixes to Try First

Before diving deep, test these immediate steps:

1. Restart Everything: Power cycle your PC/console, modem, and router. Unplug for 30 seconds to clear temporary glitches.
2. Check Server Status: Visit the official FFXIV Lodestone site for outage reports. Wait out peaks if servers are strained.
3. Switch to Wired: Ditch Wi-Fi for Ethernet—it’s more reliable for MMOs.

These resolve transient issues without tools.

Run FFXIV as Administrator on PC

Permission errors prevent the launcher from accessing network resources, triggering 90006. Elevating privileges fixes this.

Steps for Windows:

1. Locate ffxiv_dx11.exe (or boot folder shortcut) in your install directory, usually C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV – A Realm Reborn.
2. Right-click the executable > Properties > Compatibility tab.
3. Check “Run this program as an administrator.”
4. Apply and launch the game.

For Steam users: Right-click FFXIV in library > Properties > Set launch options with admin mode. Test in a low-stakes duty; success rate is high for permission-based errors.

Flush DNS and Reset Network Stack

Corrupted DNS caches or outdated IP configs block server pings. Command-line resets refresh everything.

Detailed Command Sequence:

1. Press Win + R, type cmd, Ctrl + Shift + Enter for admin prompt.
2. Run these one by one, pressing Enter after each:

ipconfig /flushdnsipconfig /releaseipconfig /renewnetsh winsock resetnetsh int ip reset

Restart PC post-commands. This clears resolver caches and rebuilds sockets, fixing 90006 in network-flaky setups. On consoles, reset via Network Settings > Test Connection.

Firewall and Antivirus Interference

Overzealous security software flags FFXIV traffic as suspicious, dropping packets.

Uninstall if exclusions fail—reinstall later. Consoles: Disable router firewall temporarily.

Optimize Your Internet Connection

Wi-Fi latency spikes cause drops; wired is king for FFXIV.

• Use Ethernet: Plug directly into modem/router for <20ms ping.
• Router Tweaks: Enable QoS, prioritize gaming ports (TCP/UDP 54992-54994, 54940).
• ISP Check: Run speedtest.net; aim for 50Mbps+ down, <50ms ping to US/EU data centers.
• VPN Caution: Avoid unless routing to low-ping servers; most add overhead.

For consoles: PS5/Xbox Network Settings > Set DNS to Google (8.8.8.8 primary, 8.8.4.4 secondary).

Advanced PC Troubleshooting

If basics fail:

• Clean Boot: msconfig > Services > Hide Microsoft > Disable all; restart to isolate software conflicts.
• Driver Updates: Update network adapter via Device Manager > Right-click > Update driver.
• MTU Adjustment: Command: netsh interface ipv4 set subinterface "Ethernet" mtu=1472 store=persistent for packet fragmentation.

Console-Specific Solutions

PS4/PS5/Xbox face similar issues but limited tools.

• Rebuild Database (PS4 safe mode).
• Test NAT Type: Aim for Type 2 (moderate).
• Port Forwarding: Router admin page > Forward FFXIV ports.
• Play Off-Peak: Avoid NA primetime during expansions.

When It’s Server-Side

Expansions overload data centers, causing widespread 90006. Monitor Lodestone; queue early mornings or late nights. Data center travel to less crowded worlds helps.

Prevention Tips for Long-Term Stability

Stay error-free:

• Weekly network resets.
• Admin mode permanent.
• Wired always.
• Monitor ping with tools like PingPlotter to FFXIV login servers.
• Update game/client promptly.

Frequently Asked Questions (FAQs)

What causes FFXIV Error 90006?

Primarily network loss from Wi-Fi instability, firewalls, permissions, or server load.

Does reinstalling FFXIV fix 90006?

Rarely; try network fixes first. Backup save data if needed.

Error 90006 on PS5—wired or wireless?

Wired Ethernet resolves most console cases.

Is Error 90006 permanent?

No, temporary; follows troubleshooting.

FFXIV ports to open?

UDP/TCP 54992-54994, 54940 for logins/duties.