Check What Is Causing the Problem
Before changing any settings, it helps to narrow down where the connection failure actually occurs. The most useful first step is to determine whether the problem affects every server or only a specific one.
Try connecting to a well-known public server such as Hypixel or Mineplex. If you can join those but not a friend’s private world, the issue is likely on the server side or related to your network configuration. If you cannot join any server, the problem may be with your internet connection, the Minecraft authentication servers, or your local setup.
Also check whether other devices on the same network can play Minecraft multiplayer. If they can, the problem is specific to your computer or console. If they cannot, the issue is likely at the network level.
Fixes to Try in Order
The following fixes are ordered from simplest and safest to more involved. Try each one before moving to the next.
1. Verify the Minecraft Server Status
Sometimes the official Minecraft authentication servers or the specific server you are trying to join are temporarily down. You can check the status of Mojang’s services on the official status page. If the servers show a red or yellow status, wait until they are operational again before troubleshooting further.
For third-party servers, check their website or social media for outage announcements.
2. Restart Everything
A full restart of your network equipment and gaming device resolves many transient connection issues.
- Turn off your computer, console, or mobile device.
- Unplug your modem and router from power.
- Wait at least 60 seconds.
- Plug the modem back in first and wait for it to establish a connection.
- Plug the router back in and wait for all indicator lights to stabilize.
- Turn on your gaming device and try again.
This clears temporary network glitches and forces fresh IP assignments.
3. Check Your Internet Connection
A weak or unstable connection can prevent multiplayer from working. Open a web browser and visit a few websites to confirm you have internet access. If pages load slowly or not at all, restart your router as described above or contact your internet service provider.
If you are using Wi-Fi, try moving closer to the router or connecting via an Ethernet cable for a more stable connection. Wireless interference, distance, or signal congestion can cause intermittent drops that Minecraft multiplayer is particularly sensitive to.
4. Allow Minecraft Through Your Firewall
Windows Defender Firewall or third-party security software may block Minecraft from reaching the internet. This is a common cause of connection errors after a game update or a system update.
On Windows:
- Open the Control Panel and go to Windows Defender Firewall.
- Click Allow an app or feature through Windows Defender Firewall (the exact wording may vary by Windows version).
- Look for Minecraft or Java(TM) Platform SE binary in the list.
- If you see it, make sure both Private and Public boxes are checked.
- If you do not see it, click Allow another app, browse to the Minecraft executable, add it, and ensure both network types are enabled.
- Click OK and restart Minecraft.
If you use a third-party antivirus or firewall, open its settings and look for an application exclusion or allow list. Add Minecraft and the Java runtime (if you play the Java Edition) to the allowed programs.
5. Update Minecraft and Your System
Running an outdated version of Minecraft can cause compatibility issues with multiplayer servers. Most servers require the client to match the server version.
Open the Minecraft launcher and check for updates. If an update is available, install it before attempting to connect.
Also ensure your operating system, graphics drivers, and network drivers are up to date. System updates often include fixes for network-related bugs.
6. Check Your Date and Time Settings
Minecraft’s authentication process relies on the correct system time. If your computer’s date, time, or time zone is wrong, the authentication servers may reject your connection.
On Windows:
- Right-click the clock in the taskbar and select Adjust date/time.
- Turn on Set time automatically and Set time zone automatically.
- Click Sync now under Synchronize your clock.
On other platforms, find the date and time settings and enable automatic synchronization. Restart Minecraft after adjusting.
7. Flush DNS and Renew IP
DNS issues can prevent your device from resolving server addresses correctly. This step clears the DNS cache and requests a fresh IP address from your router.
On Windows:
- Open Command Prompt as an administrator (search for “cmd,” right-click, and select Run as administrator).
- Type
ipconfig /flushdnsand press Enter. - Type
ipconfig /releaseand press Enter. - Type
ipconfig /renewand press Enter. - Close the Command Prompt and restart Minecraft.
On macOS, open Terminal and type sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder, then press Enter. Enter your administrator password when prompted.
8. Change Your DNS Server
If flushing DNS did not help, try switching to a public DNS server. This can resolve routing issues that prevent Minecraft from connecting.
On Windows:
- Open the Control Panel and go to Network and Sharing Center.
- Click Change adapter settings.
- Right-click your active network connection and select Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
- Select Use the following DNS server addresses.
- Enter 8.8.8.8 for Preferred DNS server and 8.8.4.4 for Alternate DNS server (Google Public DNS).
- Click OK and close all windows.
- Restart Minecraft.
You can also use Cloudflare’s DNS (1.1.1.1 and 1.0.0.1) if you prefer.
9. Disable VPN or Proxy
VPNs and proxy services can interfere with Minecraft’s connection to authentication servers or game servers. Temporarily disable any VPN or proxy software you are running and try connecting again.
If you must use a VPN for privacy or region reasons, try switching to a different server location within the VPN app. Some VPN servers are blacklisted by Minecraft servers.
10. Check for Port Conflicts (If You Are Hosting a Server)
If you are trying to host a multiplayer world for others and they cannot connect, the issue may be port forwarding. Minecraft uses port 25565 by default. You need to forward that port in your router’s settings to the local IP address of the computer running the server.
This process varies by router manufacturer. Look for a section labeled Port Forwarding, Virtual Server, or NAT in your router’s admin panel. Enter the port range, the local IP address of your server computer, and select TCP (or both TCP and UDP). Save the settings and restart the router.
Also ensure that the computer running the server has a static local IP address so that the port forward does not break after a reboot.
If the Problem Continues
If you have tried all the steps above and still cannot connect to multiplayer, consider the following:
- Reinstall Minecraft: A corrupted game installation can cause persistent connection issues. Uninstall Minecraft completely, then download and install the latest version from the official website or app store. Back up your worlds and settings before uninstalling.
- Check your Microsoft account: Minecraft now requires a Microsoft account for multiplayer. Ensure your account is in good standing, that you are signed in correctly in the launcher, and that your Xbox privacy settings allow multiplayer. You can review these settings at account.xbox.com under Privacy & online safety.
- Test with a different device: If possible, try logging into Minecraft on another computer, console, or phone using the same account. If multiplayer works there, the issue is specific to the original device.
- Contact the server administrator: If you cannot connect to a specific server, the server may have banned your IP address, be running a different version, or have reached its player limit. Check the server’s website or Discord for information.
- Contact official support: If the problem persists across all servers and all devices, visit the official Minecraft help center or submit a support ticket to Mojang.
Frequently Asked Questions
Why does Minecraft say “Connection refused”?
This usually means the server you are trying to join is not running, is not reachable from your network, or is blocking your IP address. Double-check the server address and port, and verify that the server is online.
Why does Minecraft say “io.netty.channel.AbstractChannel$AnnotatedConnectException”?
This error indicates that the client could not establish a TCP connection to the server. Causes include a wrong server address, the server being offline, a firewall blocking the port, or a network issue between you and the server. Follow the firewall and network fixes described above.
Why can’t my friend join my Minecraft world?
If you are hosting a single-player world and opening it to LAN, both computers must be on the same local network. For online play, you need to host a dedicated server or use a third-party hosting service. Check that your firewall allows incoming connections on port 25565 and that port forwarding is configured correctly on your router.
Does Minecraft multiplayer work on different versions?
Generally, no. The Java Edition and Bedrock Edition are not cross-compatible. Within each edition, the client version must match the server version. Some servers allow multiple versions, but most require a specific release. Update your game to match the server you are trying to join.
