The getsockopt error on a Minecraft server typically occurs when the underlying network connection between the host and the player is abruptly severed or timed out. This issue is often caused by firewall restrictions, aggressive antivirus software, or misconfigured router settings that block the specific port the game uses to communicate. Resolving it generally involves updating Java versions, whitelisting the server in security software, or ensuring that the network drivers are entirely up to date to prevent packet loss.

How to Fix the getsockopt Error on a Minecraft Server

The getsockopt connection error occurs due to network or firewall issues, version mismatches, or incorrect server details. Ensure the server details are accurate between the server and client.

1. Log in to the BisectHosting Starbase panel.

2. From the Home tab, verify the Minecraft and Modloader version.

3. Ensure the IP Address matches the client Server Address.

4. Select the Config Files tab and choose Server Properties.

5. Verify the Whitelist settings. Learn how to whitelist here.

Below are different fixes that work for different clients.

Direct Connect with the IP Address

1. Log in to the BisectHosting Starbase panel.

2. From the Home tab, copy the IP Address.

3. Launch Minecraft.

4. Select Multiplayer.

5. Choose Direct Connection.

6. Paste the IP Address from step 2.

7. Click Join Server.

Use a Different Subdomain

1. Log in to the BisectHosting Starbase panel.

2. Next to Subdomain, click the Configure button.

3. In the Subdomain field, enter a memorable name.

4. Select a Domain from the dropdown.

5. Press the Save button.

6. Choose Confirm.

7. Copy the Subdomain.

8. Launch Minecraft.

9. Select Multiplayer.

10. Click Add Server.

11. Under Server Address, paste the subdomain from step 7.

12. Enter a server name and choose Done.

13. Join the server.

Allow javaw through the Firewall

1. Open the Windows Defender Firewall app.

2. Choose Allow an app or feature through Windows Defender Firewall.

3. Select Change settings. The button is greyed out once activated.

4. Next to javaw, mark the checkboxes under Public and Private.

5. Press the OK button.

6. Join the server.

Note: Trying to connect with a VPN enabled also works for some users.

Helpful Links

How to Join a Minecraft Server
How to Create a Subdomain on the Starbase Panel
BisectHosting Minecraft Knowledgebase
Contact BisectHosting Support