Error BN-564 in Overwatch can feel like a punch to the gut, you’re ready to jump into competitive play or casual matches, and then Blizzard throws up a cryptic error code that won’t let you connect. This error has been frustrating players across PC and console platforms for years, but the good news is that it’s almost always fixable with the right approach. Whether you’re dealing with a failed login attempt, connection drop mid-match, or a fresh install that won’t authenticate, this guide breaks down exactly what error BN-564 means and how to get back in the game fast. We’ll walk through the most common culprits, platform-specific solutions, and preventative steps to keep this error from derailing your gaming sessions.
Key Takeaways
- Error BN-564 is a connection or authentication error that prevents login or causes mid-match disconnects, but it’s almost always fixable with systematic troubleshooting.
- Check your internet connection first—aim for at least 5 Mbps download speed, switch to wired ethernet if on WiFi, and disable any VPNs that may interfere with Blizzard servers.
- Run Battle.net’s Scan and Repair tool, update graphics and network drivers, and clear cached files to resolve corrupted game files that trigger the BN-564 error.
- Temporarily disable antivirus software, firewalls, and overlay programs (Discord, GeForce Experience, OBS) that can interfere with Overwatch’s connection initialization.
- If basic fixes fail, perform a clean reinstall of Overwatch after restarting your PC, which resolves deep-seated file corruption that repair tools often miss.
- Prevent future BN-564 errors by maintaining a stable wired network connection, keeping all software updated monthly, avoiding VPNs unless necessary, and checking Blizzard’s status page before troubleshooting.
What Is Error BN-564 in Overwatch?
Error BN-564 is a connection or authentication error that Blizzard displays when the game client can’t establish a stable connection to Overwatch servers or validate your account credentials. It typically appears during the login phase or when the client attempts to sync with Blizzard’s backend services. Unlike other error codes that pinpoint specific issues (like BN-2 for server maintenance or BN-7 for outdated builds), BN-564 is broader and relates to general connectivity problems between your client and Blizzard’s infrastructure.
The error isn’t limited to one platform. Players report it on PC (Windows and Mac via Battle.net), PlayStation 5, Xbox Series X/S, and even older consoles like PlayStation 4 and Xbox One. When it hits, the game either refuses to launch or kicks you out mid-session with a disconnect notice. The frustration spike is real, especially if you’re in the middle of a competitive match or a ranked grind.
Common Causes of the BN-564 Error
Network and Connection Issues
Your internet connection is the first suspect. Weak WiFi signals, unstable routing, DNS misconfigurations, or ISP throttling can all trigger BN-564. Some players have reported the error after switching to a new WiFi network or experiencing brief packet loss. If your connection drops for even a second while the client is authenticating, Blizzard’s servers may reject the session and throw the error. Also, port forwarding issues or your router blocking Overwatch’s required ports (like 6881–6889 for UDP traffic) can prevent proper communication.
VPN usage is another common culprit. While VPNs are useful for privacy, some Blizzard services have known conflicts with certain VPN protocols or servers. If you’re connected to a VPN when launching Overwatch, Blizzard might not recognize your account region or trust your location, resulting in BN-564.
Corrupted Game Files
Overwatch’s game files can become corrupted during updates, unexpected crashes, or storage errors. A single missing or damaged file in the client can prevent proper initialization and cause authentication failures. This typically happens after a patch rollout or if your installation was interrupted. Battle.net’s integrity check usually catches this, but sometimes it slips through.
Disk space issues compound this problem. If your storage drive is nearly full during an update, the client might not finish writing files correctly, leaving your installation in a broken state.
Server-Side Problems
Sometimes the error isn’t on your end, it’s Blizzard’s. Server maintenance windows, regional outages, or backend authentication service hiccups can prevent legitimate connections from going through. During major patches or seasonal launches, server load can spike, and older clients might struggle to authenticate. Also, if Blizzard detects unusual login patterns (multiple login attempts in a short time, location changes, etc.), they might temporarily block your session as a security measure, displaying BN-564 as a blanket error.
Step-by-Step Solutions to Fix Error BN-564
Check Your Internet Connection
Start here. Open your browser and visit a speed test site to check your connection stability. Aim for at least 5 Mbps download speed for Overwatch, though 15+ Mbps is ideal for competitive play without lag. If you’re on WiFi, move closer to your router or switch to a wired ethernet connection, this eliminates signal interference and packet loss.
Restart your modem and router. Unplug both for 30 seconds, then plug the modem back in first, wait for it to fully boot (usually 2–3 minutes), and then restart the router. This clears temporary connection states and often resolves transient network errors.
Disable any VPN or proxy service you’re using. Even if you think it shouldn’t affect gaming, try launching Overwatch with your VPN off. If BN-564 disappears, your VPN is the culprit, either switch VPN providers or whitelist Overwatch in your VPN’s kill switch settings.
Verify Game Files and Update Drivers
Open Battle.net, navigate to Overwatch, click the Options menu, and select Scan and Repair. This process checks every game file against Blizzard’s database and re-downloads any that are missing or corrupted. It usually takes 5–15 minutes depending on your connection and drive speed.
While that’s running, update your graphics drivers. Outdated drivers, especially for NVIDIA or AMD GPUs, can cause connection and initialization issues. On PC, NVIDIA’s driver page or AMD’s site to grab the latest version. Console players should ensure their system software is fully updated by going to Settings > System > System Software Update.
Also verify your network drivers on PC. Go to Device Manager, find your network adapter under Network Adapters, right-click it, and select Update driver. Choose “Search automatically for updated driver software.” Outdated network drivers can cause subtle connection issues that result in BN-564.
Clear Cache and Temporary Files
Battle.net stores temporary files and caches that can become corrupted. On PC, navigate to your Battle.net installation folder (usually C:Program Files (x86)Battle.net), and delete the Cache folder. Battle.net will regenerate it on next launch.
For Overwatch-specific cache, delete the contents of C:Users[YourUsername]AppDataLocalBlizzard EntertainmentBattle.netCache (on Windows) or ~/Library/Caches/Battle.net/ (on Mac). Don’t delete the folder itself, just the files inside.
On console, you can clear the system cache by going to Settings > Storage > Console Storage > Cache, then select Clear Cache. This won’t delete your saved games or installed games, but it forces the system to rebuild its temporary storage.
Disable Third-Party Software and Firewalls
Anti-virus software, firewalls, and overlay programs (like Discord overlay, GeForce Experience, or OBS) can interfere with Overwatch’s connection initialization. Temporarily disable your antivirus software and Windows Defender (if you’re using Windows). Right-click the Windows Defender icon in your system tray, select Virus & threat protection, and toggle off Real-time protection (remember to re-enable it later).
For firewalls, open Windows Defender Firewall, click Allow an app through firewall, and ensure Battle.net and Overwatch are both listed under Allowed apps. If they’re not, click Change settings, then Allow another app, and browse to your Battle.net or Overwatch executable.
Disable any overlay software temporarily. In Discord, turn off Hardware Acceleration in User Settings > Voice & Video. If you’re using GeForce Experience, disable the in-game overlay in Settings > General.
Reinstall Overwatch
If none of the above works, a clean reinstall is your nuclear option. Open Battle.net, go to Overwatch, click Options, and select Uninstall. Wait for it to complete fully, don’t rush this step.
After uninstalling, restart your PC. This ensures all temporary files and registry entries are cleared. Then reinstall Overwatch fresh from Battle.net. The download usually takes 15–60 minutes depending on your connection speed. According to PC gaming optimization guides, a fresh install often resolves deep-seated file corruption that repair tools miss.
Platform-Specific Fixes
PC Solutions
PC players have the most granular troubleshooting options. Beyond the steps above, check if Overwatch is compatible with your build. Blizzard officially supports Windows 10 (Build 19041) and later, or macOS 10.15+. If you’re running an older OS version, update it, BN-564 can occur on unsupported systems.
For competitive players, disable any background apps that consume network bandwidth. Torrent clients, cloud sync services (Dropbox, OneDrive), and browser downloads can all steal bandwidth and cause Overwatch to lose connection stability. Use Task Manager (Ctrl+Shift+Esc) to check what’s running and close unnecessary processes.
Some players have reported success by changing their Battle.net region setting. Open Battle.net client, click your account name in the top-left, select Settings, and check your region. If you’ve moved countries or your ISP recently changed your geolocation, try switching regions or setting it to “Auto-detect.”
Console Solutions
PlayStation and Xbox players have fewer direct troubleshooting options, but network-level fixes still apply. First, test your internet connection from your console’s settings. On PS5, go to Settings > Network > Test Internet Connection. On Xbox Series X/S, go to Settings > General > Network Settings > Test Network Speed & Statistics. Both should show stable connection speeds without packet loss.
If your console has been running continuously, restart it fully. Power it off completely (not rest mode), wait 10 seconds, and power it back on. This clears system memory and network buffers that might be stale.
Console players should also check if they’re using a secondary account or a account with parental restrictions. Overwatch requires a full online account, if your profile is restricted or you’re using a guest account, BN-564 can appear. Go to your account settings and verify that online play is enabled.
On some occasions, re-authenticating your Blizzard account through the console’s account linking system has resolved the issue. For PlayStation, go to Settings > User and Accounts > Other Users > Manage > Linked Services, disconnect Blizzard, and reconnect. On Xbox, go to Settings > Account > Personalization > Xbox App Preferences and re-sync your Blizzard account.
When to Contact Blizzard Support
If you’ve worked through all the steps above and still can’t connect, it’s time to escalate to Blizzard support. Specifically, reach out if:
- Your account shows as locked or flagged. Blizzard sometimes temporarily restricts accounts due to suspicious login activity or account recovery requests. Support can manually review and unlock your account within 24 hours.
- You’ve performed a clean reinstall and still see BN-564. This suggests a server-side issue tied to your specific account or region.
- Error persists across multiple networks. If you’ve tried connecting from a friend’s WiFi, a mobile hotspot, and your home network and get BN-564 every time, it’s almost certainly account or server-related.
- You see BN-564 alongside other error codes. Multiple errors happening simultaneously might indicate a deeper backend issue only Blizzard can diagnose.
When submitting a ticket, include your Battle.net account name, the exact timestamp of when the error occurred, your platform (PC/PS5/Xbox), and a detailed description of what you were doing (logging in, mid-match, etc.). According to comprehensive gaming setup guides, providing detailed context speeds up support response times significantly.
Blizzard’s support team typically responds within 24–72 hours. If they ask for additional info like your system specs or logs, gather that proactively to avoid back-and-forth delays.
Preventing Error BN-564 in the Future
Once you’ve fixed BN-564, keep it from coming back with these preventative measures:
Maintain a stable network. Invest in a quality router if your current one is 5+ years old. Older routers struggle with modern gaming demands. If you’re consistently on WiFi, consider running an ethernet cable to your gaming device or using a mesh WiFi system for better coverage. Monitor your ISP for throttling or planned maintenance windows.
Keep software updated. Enable automatic updates for Windows, macOS, GPU drivers, and Battle.net itself. Outdated systems are more prone to connection errors. Set a calendar reminder to check for driver updates monthly.
Monitor your storage space. Never let your primary drive drop below 10% free space. Games like Overwatch need breathing room for temporary files, patches, and cache. Archive or delete unused games to maintain healthy storage levels.
Use a wired connection for ranked play. If you’re serious about competitive play, ethernet is non-negotiable. Even if WiFi works most of the time, the occasional lag spike or disconnect in a clutch moment can ruin your SR (Skill Rating). Wired connections eliminate this variable.
Disable unnecessary overlays and background apps. Discord overlay, GeForce Experience, and streaming software can cause subtle conflicts. Toggle them off before launching Overwatch, especially during ranked sessions.
Don’t use VPNs unless necessary. If you need a VPN, whitelist Overwatch or test your connection to Battle.net servers with the VPN off to confirm it’s not the culprit. According to PC gaming performance resources, many gaming issues stem from VPN and proxy configurations that weren’t tested with gaming workloads.
Check Blizzard’s status page before troubleshooting. Before diving into complex fixes, visit Blizzard’s official status page to see if there’s a known outage in your region. Sometimes BN-564 isn’t a local issue, it’s a server problem on their end, and waiting is faster than troubleshooting.
Conclusion
Error BN-564 is annoying, but it’s rarely unsolvable. Start with the basics, check your connection, verify your files, and clear your cache. For most players, these steps resolve the issue within an hour. If you’re still stuck, work through the platform-specific solutions and consider a clean reinstall before contacting support.
Remember that prevention is easier than troubleshooting. A stable network, updated drivers, and clean system maintenance will keep you in-game and climbing the competitive ladder. And if BN-564 does rear its head again, you’ll know exactly what to do. Now get back out there and rack up those eliminations.
