Fix Overwatch BN-564 Error

The BN-564 error in Overwatch is a common connectivity roadblock that prevents players from logging into matches. This issue often arises during peak times when Battle.net login servers are overwhelmed, especially after major patches or updates. Affecting PC players on Steam, Battle.net desktop app, and even console users, it manifests as a failure to connect to game servers. While frustrating, it’s usually resolvable with targeted fixes that bypass queues, optimize your network, or adjust account settings.

In this detailed guide, we’ll explore the root causes, walk through beginner-friendly solutions, and provide advanced techniques for stubborn cases. By the end, you’ll have multiple tools to restore your access and dive back into heroic battles.

Understanding the BN-564 Error Code

At its core, BN-564 signals that Overwatch cannot establish a stable link to Blizzard’s Battle.net authentication servers. This can stem from server-side overloads—common on launch days for new seasons or heroes—or client-side problems like outdated network configurations. Steam users report it more frequently because the platform’s integration sometimes routes through congested endpoints.

Key triggers include:

• High login traffic overwhelming default Battle.net regions.
• IPv6 conflicts or DNS resolution failures.
• Linked account glitches on consoles (PSN/Xbox).
• Firewall or antivirus interference blocking ports.

Recognizing these helps prioritize fixes. Always start with simple checks before diving deeper.

Initial Quick Checks Before Troubleshooting

Before advanced steps, rule out basics:

1. Verify Server Status: Visit Blizzard’s official status page or check Overwatch’s social channels. If maintenance is underway, wait it out—BN-564 often clears automatically post-downtime.
2. Restart Everything: Close Overwatch, reboot your router/modem, and relaunch the game. This refreshes temporary connections.
3. Test Your Internet: Run a speed test and try other online games. Packet loss over 5% or ping above 100ms could be the culprit.

These resolve 40-50% of cases without further effort.

Primary Fix for Steam Users: Edit Launch Options

Steam’s Overwatch version is prone to BN-564 due to default server routing. A popular workaround redirects login to a less crowded Battle.net endpoint, like the Korean server proxy.

Step-by-Step:

1. Launch Steam and right-click Overwatch in your library.
2. Select Properties > General tab.
3. In the Launch Options field, enter: --BNetServer=kr.actual.battle.net:1119 (no quotes).
4. Close the window, launch Overwatch, and log in.

This bypasses EU/US queues by tunneling through an alternate server. It’s safe, reversible (just clear the field), and works instantly for most. If issues persist, proceed to Battle.net installation.

Switch to Official Battle.net Client

For a permanent solution, ditch Steam entirely. Blizzard’s native app handles server load better.

Installation Guide:

• Uninstall Overwatch from Steam (back up saves if needed).
• Download Battle.net from blizzard.com.
• Install Overwatch—your progress syncs via Battle.net account.

Users report 90% success rates post-switch, eliminating platform-specific errors.

Network Optimization Techniques

Many BN-564 instances trace to local network glitches. Resetting these restores connectivity.

Flush DNS and Reset Winsock (Windows)

Corrupted DNS caches block server resolution.

1. Search for Command Prompt, run as Administrator.
2. Execute these commands one by one:
   ipconfig /flushdns
netsh winsock reset
netsh int ip reset
3. Restart your PC.

Switch to Google DNS

Default ISP DNS can be unreliable.

• Right-click network icon > Open Network & Internet settings.
• Go to Change adapter options, right-click your connection > Properties.
• Select Internet Protocol Version 4 (TCP/IPv4) > Properties.
• Choose Use the following DNS: Preferred 8.8.8.8, Alternate 8.8.4.4.

Apply and test Overwatch.

Release/Renew IP Address

ipconfig /release
ipconfig /renew

Firewall and Security Software Adjustments

Overzealous protections block Battle.net ports (e.g., 1119, 3724).

• Windows Firewall: Search Allow an app through firewall, add Overwatch.exe and Battle.net.exe.
• Antivirus: Temporarily disable real-time scanning or add exceptions.
• VPN/Proxy: Disable entirely— they introduce latency.

Test after each change.

Console-Specific Solutions (PS4/PS5, Xbox)

BN-564 on consoles often links to account binding issues.

1. Log into battle.net > Account Settings > Connections.
2. Disconnect PSN/Xbox account.
3. Restart console, relaunch Overwatch, and relink when prompted.

This fixes sync errors from platform outages.

Advanced Fixes for Persistent Errors

If basics fail:

• Run Battle.net Repair Tool: In the app, select Overwatch > cog icon > Repair.
• Disable IPv6: In network properties, uncheck IPv6.
• Clean Reinstall: Delete Overwatch folders (Documents/Overwatch), reinstall.
• Contact Support: Submit a ticket via Blizzard support with error logs.

Prevention Tips for Future Sessions

Avoid recurrences:

• Play during off-peak hours.
• Keep game and Battle.net updated.
• Use wired Ethernet over Wi-Fi.
• Monitor server status via official apps.

Frequently Asked Questions (FAQ)

Q: Is BN-564 a permanent ban?
A: No, it’s purely a connection error, not punitive.

Q: Does it affect Overwatch 2 only?
A: Common in both, but more frequent post-OW2 launch.

Q: Why Steam specifically?
A: Indirect routing hits queues harder.

Q: Can mobile hotspots fix it?
A: Sometimes, if your main ISP is throttled.

Q: Safe to use Korean server flag long-term?
A: Yes, it’s an official endpoint; no bans reported.

Conclusion

BN-564 doesn’t have to sideline your Overwatch adventures. Start with server checks and restarts, escalate to launch options or Battle.net switch, and optimize your network for reliability. Most players resolve it in under 15 minutes. Stay updated on patches, as Blizzard occasionally tweaks login systems. Heroes never quit—get back in the fight!