If you’re trying to play Blue Protocol: Star Resonance but can’t get past the “Network Error” or “Unable to connect to server” message, you’re definitely not alone. Many players face this frustrating issue, especially right after an update or during peak hours.
This problem usually prevents logins, matchmaking, and even solo play because Blue Protocol relies on a constant online connection. Don’t worry — the good news is that it’s usually caused by common connection settings or temporary server problems that can be fixed easily.
In this guide, you’ll find all the working methods (1–10) to fix connection issues and get back into the game quickly.
Common Causes of Network Errors in Blue Protocol: Star Resonance
Here are the most frequent reasons behind connection or network problems:
- Temporary server maintenance or outages
- Slow or unstable Wi-Fi connection
- VPN or proxy interfering with game servers
- Firewall or antivirus blocking the connection
- Incorrect DNS settings or network cache
- Outdated network adapter drivers
- Background apps consuming network bandwidth
Understanding what’s causing the issue will help you choose the right fix below.
Fix 1: Check Server Availability
Before changing anything on your PC, confirm whether the servers are actually online.
- Visit Bandai Namco’s official Blue Protocol server status page or their Twitter/X account.
- Look for ongoing maintenance announcements.
- If servers are under maintenance, you’ll need to wait until they are back online.
💡 Server downtime is the most common reason behind sudden connection failures.
Fix 2: Restart Your Router and PC
This simple trick often works wonders.
- Power off your modem and router completely.
- Wait for 1–2 minutes.
- Turn them back on and restart your computer.
✅ This resets your IP configuration and clears any temporary internet issues.
Fix 3: Disable VPN or Proxy
VPNs or proxies can misroute your connection and prevent the game from reaching its servers.
- Press Windows + I → Network & Internet → VPN.
- Remove or disable active VPN connections.
- Then go to Proxy Settings and turn off any active proxy servers.
After disabling them, try launching the game again.
Fix 4: Allow Blue Protocol Through Windows Firewall
- Press Win + R, type
control firewall.cpl, and hit Enter. - Choose Allow an app through Windows Defender Firewall.
- Click Change settings → Allow another app.
- Locate your Blue Protocol
.exefile and add it. - Check both Private and Public boxes → click OK.
💡 This prevents the firewall from blocking outgoing and incoming game connections.
Fix 5: Reset DNS and Network Cache
If your DNS cache is corrupted, it may cause timeouts or connection drops.
- Open Command Prompt as Administrator.
- Run these commands one by one:
ipconfig /flushdns ipconfig /release ipconfig /renew netsh winsock reset - Restart your PC after the commands finish.
✅ This method refreshes your entire network stack and often fixes persistent errors.
Fix 6: Use Google DNS
Switching to a public DNS can speed up connections to global servers.
- Press Win + R → type
ncpa.cpl. - Right-click your active connection → Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) → Properties.
- Select Use the following DNS server addresses and enter:
- Preferred:
8.8.8.8 - Alternate:
8.8.4.4
- Preferred:
- Save changes and restart your computer.
💡 Google DNS is faster and more stable for most players worldwide.
Fix 7: Update Network Drivers
Outdated drivers can cause unstable or lost connections.
- Press Win + X → Device Manager.
- Expand Network adapters.
- Right-click your Wi-Fi/Ethernet adapter → Update driver.
- Choose Search automatically for drivers.
If no update is found, visit your motherboard or laptop manufacturer’s website and download the latest network driver manually.
Fix 8: Stop Background Bandwidth Usage
Apps like Steam, Epic Games Launcher, or Discord may eat up network resources.
- Open Task Manager (Ctrl + Shift + Esc).
- Go to the Processes tab.
- Right-click unnecessary apps consuming high bandwidth → select End task.
This ensures all bandwidth is reserved for Blue Protocol: Star Resonance.
Fix 9: Perform a Network Reset
If your network configuration is completely messed up, a reset can fix it.
- Open Settings → Network & Internet → Advanced network settings.
- Scroll down and select Network reset → Reset now.
- Restart your computer once it’s done.
💡 This restores all network settings to default without affecting your personal files.
Fix 10: Reinstall Blue Protocol: Star Resonance
If none of the above works, a clean reinstall might help.
- Uninstall the game completely.
- Delete leftover files from:
C:\Users\<YourName>\AppData\Local\BlueProtocol - Reinstall the game via Steam or the official launcher.
This removes any corrupted or outdated configuration files that could cause connectivity issues.
Additional Tips
- Always run the game as Administrator.
- Make sure Windows Time & Region settings are correct.
- Use a wired Ethernet connection for the best stability.
- Temporarily disable third-party antivirus or firewalls while playing.
- Keep Windows updates and drivers current for optimal performance.
Frequently Asked Questions (FAQs)
Q1: Why does Blue Protocol keep disconnecting?
It usually happens because of weak Wi-Fi, blocked ports, or temporary server outages.
Q2: Can I play the game offline?
No. Blue Protocol: Star Resonance is an online multiplayer RPG and requires a constant internet connection.
Q3: Does using a VPN fix the network issue?
Sometimes, but it can also make things worse. Try disabling VPNs first before testing other fixes.
Q4: How do I check server status?
Follow Blue Protocol’s official social media accounts or community Discord for server maintenance updates.
Conclusion
The Network Error in Blue Protocol: Star Resonance can be annoying, but it’s usually easy to fix with the right steps. By checking server availability, updating your network drivers, resetting DNS, and allowing the game through your firewall, you can quickly restore connectivity.
With these solutions, you’ll be able to dive back into Regnas and enjoy a smooth, lag-free experience in Blue Protocol: Star Resonance.
