How to Fix FFXIV 90002 Error Easily and Quickly 
Final Fantasy XIV is a massively multiplayer online role-playing game developed by Square Enix. It is available on various game platforms, including Microsoft Windows, PlayStation 3, PlayStation 4 and macOS. The Xbox One version is in development. The game has released to largely positive reception and become popular around the world.
However, some users who paly FFXIV on Windows PC complain that they got an error code 90002 appearing with the message “connection with the server was lost”. This error could be caused by various factors. If you’re not sure which one you’re facing, you might need to solve it by trying the following fixes one by one.
Fix 1: Disable Large Send Offload
Large Send Offload is an option for Network Adapter settings. It could prevent upper-level protocols (like TCP) from breaking large packets in to a series of smaller packets with individual headers, which is usually helpful for optimizing the network performance. However, games including FFXIV might disconnect form the internet if the option is turned on.
Therefore, you can try disabling Large Send Offload to solve error 90002 FFXIV (if it is available). The detailed steps are as below.
Step 1: Press Win + R to invoke Run window. Then input ncpa.cpl in the box and click OK to open Network Connection.
Step 2: Right-click the network you’re using currently, and select Properties.
Step 3: In the pop-up window, click Configure under Networking tab.
Step 4: Switch to Advanced tab. Click Large Send Offload v2 (IPv4) in Property section, and select Disabled for its value. Then do the same operation for Large Send Offload v2 (IPv6).
Step 5: Click OK to save the changes you have made.
After the operation, you should restart your computer and check whether your FFXIV is able to run without any problems. It the issue appears again, you need to move on to the next FFXIV 90002 fix.
Fix 2: Using Google DNS
Another easy way to solve FFXIV error 90002 “connection with the server was lost” is to change the DNS to Google DNS. Here is how to do it on Windows.
Step 1: Go to Network Connections settings and open the Properties of the network you’re using.
Step 2: Under Networking tab, double-click Internet Protocol Version 4 (TCP / IPv4) to access its Properties.
Step 3: In the following window, select Use the following DNS server address and input the following address. Then click OK:
- Preference DNS Server: 184.108.40.206
- Alternate DNS server: 220.127.116.11
Step 4: Open Protocol Version 6 (TCP / IPv6) Properties, select Use the following DNS server address and type:
- Preference DNS Server: 2001:4860:4860::8888
- Alternate DNS server: 2001:4860:4860::8844
Step 5: Click OK to keep the changes.
After changing DNS server addresses, you can restart the computer and launch your game. FFXIV error 90002 should have been fixed.
Fix 3: Disable Antivirus and Firewall Temporarily
It has been reported that some antivirus programs could also lead to FFXIV 90002 error, especially Avast. To fix the error, you might need to disable your third-party antivirus and firewall software temporarily. If the error still exists, you should try uninstalling the software. After solving the problem, remember to enable your antivirus or change to another antivirus program.
Fix 4: Reinstall FFXIV
If all the FFXIV 90002 fixes fail to solve the problem, you can try reinstalling the game. You just need to go to Control Panel, select View by: Category from the upper right corner and select Uninstall a program. Then right-click FFXIV and select Uninstall. After uninstalling the game by following the onscreen instructions, you can download and install it again to play it.
Originally published at https://www.partitionwizard.com on August 6, 2020.