Solved: How do I fix Error 10102, 90001, 90002, and 90007 “Connection with the server was lost”?

Problem: Final Fantasy XIV player reported an error “Connection with the server was lost” with error code 90001 and 90002 randomly when playing the game. This problem is typically reported on Windows 7 and Windows 10. However, the error does not occur at the initial screen or during the character creation menu.

Solved: How do I fix Error 10102, 90001, 90002, and 90007 "Connection with the server was lost"?
Solved: How do I fix Error 10102, 90001, 90002, and 90007 “Connection with the server was lost”?

Follow below solution steps to resolve “Connection with the server was lost” error.

Content Summary

Potential Causes
Solution 1: Verify Server Status
Solution 2: Restart or Reset Router
Solution 3: Enable UPnP (Universal Plug and Play) in the Router
Solution 4: Forward the ports used by Final Fantasy XIV in the Router
Solution 5: Modify NIC Settings
Solution 6: Reinstall the Game
Solution 7: Add the Game to Antivirus and Firewall Exception List
Solution 8: Temporary Disable or Uninstall Antivirus and Firewall Settings
Solution 9: Use Google DNS
Solution 10: Force to Ignore UPnP
Solution 11: Modify Internet Explorer Settings
Reference

Potential Causes

There are several different reasons that might cause this error code, including:

  • Game server issue
  • Corrupted game files
  • Router inconsistency
  • Level 3 ISP Note
  • Common IP / TCP Inconsistency
  • UPnP disable
  • NAT is closed
  • NIC issue
  • Large Send Offload is Enabled
  • Firewall or Antivirus blocked the connection
  • Using a GPN service
  • Inconsistent DNS

Solution 1: Verify Server Status

Go to server status page of FFXIV to verify no issues with servers in your area. In case the server you’re currently connected to shows as Partial Maintenance or Maintenance, try to connect to a different server while this error is resolved or wait for the developers to fix the server problem.

server status page of FFXIV
server status page of FFXIV

Solution 2: Restart or Reset Router

Solution 3: Enable UPnP (Universal Plug and Play) in the Router

* Steps may be vary depending on the router’s manufacturer.
Step 1: Open the browser and access to Router configuration page, normally the default address is 192.168.0.1 or 192.168.1.1

Step 2: Log in to the router configuration page. You should be able to login using admin for both username and password if you never changed the default login credentials. If that doesn’t work then search online for specific steps on accessing your router default admin login credential.

Step 3: Look for the UPnP setting in WAN Internet Connection or Forwarding tab in the Router configuration page.

Step 4: Enable UPnP setting.

Enable UPnP in router
Enable UPnP in the router

Step 5: Save the changes and restart the router and PC.

Solution 4: Forward the ports used by Final Fantasy XIV in the Router

* Steps may be vary depending on the router’s manufacturer.
Step 1: Open the browser and access to Router configuration page, normally the default address is 192.168.0.1 or 192.168.1.1

Step 2: Log in to the router configuration page. You should be able to login using admin for both username and password if you never changed the default login credentials.

Step 3: Expand the Advanced menu and access the NAT Forwarding or WAN – Virtual Server / Port Forwarding section.

Step 4: Click on Virtual Servers and Add button to begin the process of adding port.

Add Port Forwarding in Router
Add Port Forwarding in Router

List of the port to open for Final Fantasy XIV:

PC
TCP: 54992-54994,55006-55007,55021-55040
UDP: 5060,5062,6250,3478-3479,12000-64000

Steam
TCP: 27015-27030,27036-27037,54992-54994,55006-55007,55021-55040
UDP: 4380,27000-27031,27036

Playstation 4
TCP: 1935,3478-3480,8080,55296-55551
UDP: 3074,3478-3479,55296-55551

Playstation 3
TCP: 3478-3480,5223,8080,54992-54994,55006-55007,55021-55040,55296-55551
UDP: 3074,3478-3479,3658,55296-55551

Solution 5: Modify NIC Settings

Step 1: Press Windows key + R to open the Run box.

Step 2: Type ncpa.cpl then press Enter to open the Network Connection menu.

Step 3: Right-click on the active ethernet network and click on Properties from the context menu.

Step 4: Go to the Networking tab and click on the Configure button.

Step 5: Go to the Advanced tab.

Step 6: Select Large Send Offload v2 (IPv4) from the Property menu, and set the value to Disabled.

Step 7: Select Large Send Offload v2 (IPv6) from the Property menu, and set the value to Disabled.

Step 8: Go to the Power Management tab and uncheck the box beside Allow the computer to turn off this device to save power.

Go to the Power Management tab and uncheck the box beside Allow the computer to turn off this device to save power.
Go to the Power Management tab and uncheck the box beside Allow the computer to turn off this device to save power.

Step 9: Click the OK button to save the changes.

Step 10: Restart the PC.

Solution 6: Reinstall the Game

Step 1: Press Windows key + R to open the Run box.

Step 2: Type appwiz.cpl and press Enter to open the Programs and Features.

Step 3: Locate Final Fantasy XIV from the list of installed items, right-click on it and choose Uninstall from the context menu.

Step 4: Follow the instructions to complete the uninstallation process.

Step 5: Restart the PC and proceed with the reinstallation of the Final Fantasy XIV client.

Solution 7: Add the Game to Antivirus and Firewall Exception List

Add the game installation folder into the antivirus and firewall exception list. Add the firewall inbound rules for the ports below to allow connection:

PC
TCP: 54992-54994,55006-55007,55021-55040

Steam
TCP: 27015-27030,27036-27037,54992-54994,55006-55007,55021-55040
UDP: 4380,27000-27031,27036

Solution 8: Temporary Disable or Uninstall Antivirus and Firewall Settings

Temporarily disable or uninstall antivirus and firewall, restore the game-related files from the quarantine settings of antivirus and firewall to the original locations, if any.

Solution 9: Use Google DNS

Use Google DNS on Xbox One

Step 1: On the main Xbox dashboard, press the guide menu on the controller.

Step 2: Go to Settings > Network > Advanced Settings menu.

Step 3: Click on the DNS settings > Manual.

Step 4: Set 8.8.8.8 as the Primary DNS and 8.8.4.4 as the Secondary DNS. If you want to use the Google DNS for IPv6, use 208.67.222.222 as the Primary DNS and 208.67.220.220 as the Secondary DNS.

Step 5: Save the changes and restart your PC.

Use Google DNS on Windows PC

Step 1: Press Windows key + R to open the Run box.

Step 2: Type ncpa.cpl and press Enter to open the Network Connections menu.

Step 3: Right-click on the network that you are using and click on Properties from the context menu.

Step 4: Go to the Networking tab.

Step 5: Go to the module under This connection uses the following items, select Internet Protocol Version 4 (TCP/IPv4) and click on the Properties button.

Step 6: Click on the General tab, select Use the following DNS server address and set 8.8.8.8 for Preference DNS Server and 8.8.4.4 for Alternate DNS server, click on OK button to save the changes.

Step 7: Select Internet Protocol Version 6 (TCP/IPv6) and click on the Properties button.

Step 8: Select Use the following DNS server address and set 2001:4860:4860::8888 for Preference DNS Server and 2001:4860:4860::8844 for Alternate DNS server, click on OK button to save the changes.

Step 9: Restart your PC.

Use Google DNS on PS4

Step 1: On the main dashboard menu of PS4, got to the Settings > Network > Set up Internet Connection and press X to get started.

Step 2: Select either Wi-Fi or LAN.

Step 3: Choose Custom from the list of available options

Step 4: Set the IP Address to Automatically.

Step 5: Set DHCP Host Name to Do Not Specify.

Step 6: Set DNS Settings to Manual, change the Primary DNS to 8.8.8.8 and the Secondary DNS to 8.8.4.4.

Step 7: Save the changes then restart the console.

Solution 10: Force to Ignore UPnP

Step 1: Open File Explorer > My Documents > My Game > FF14 folder.

Step 2: Right-click on FFXIV.cfg and choose Open with > Notepad from the context menu.

Step 3: Locate the Network Settings in the list, change the value of UPnP from 1 to 0 then save the changes.

Solution 11: Modify Internet Explorer Settings

The game will use the Internet Explorer web browser to connect to the internet.

Step 1: Open Internet Explorer.

Step 2: Go to Tools > Internet Options and change the following settings:

  • Go to General tab, delete ALL browser history.
  • Go to Security tab, change the Security Level to the lowest possible settings or no higher than Medium.
  • Go to Privacy tab, click the Advanced button and select Accept for First-party Cookies and Third-party Cookies.
  • Go to Advanced tab, check the Allow software to run or install even if signature is invalid, Use TLS 1.0, 1.1, 1.2. Use SSL 3.0 should be unchecked.

Step 3: Click on the Apply button to save the settings.

Step 4: Click OK button to close the Internet Options menu.

Step 5: Right-click on the FFXIV launcher icon and select Properties.

Step 6: Go to the Compatibility tab, and change the Compatibility mode to Windows 7.

Step 7: Click on the Apply button, then OK button to save the changes.

Step 8: Restart your PC.

Step 9: Right-Click the FFXIV launcher icon and select Run as Administrator option to start the game.

Reference:

reddit > ffxiv > WTF! Connection with the server was lost. 10102 NEW ERROR !
Square Enix > Final Fantasy XIV Technical Support Forums > 90007 server lost error

Thomas Apel Published by Thomas Apel

, a dynamic and self-motivated information technology architect, with a thorough knowledge of all facets pertaining to system and network infrastructure design, implementation and administration. I enjoy the technical writing process and answering readers' comments included.