Arknights: Endfield, the highly anticipated 3D real-time strategy RPG from Hypergryph, expands the beloved Arknights universe with large-scale exploration, tactical combat, and deep RPG systems across PC, mobile, and console platforms. Players worldwide have flocked to its early beta tests, drawn by immersive world-building and complex gameplay mechanics. 

However, as more players enter this expansive world, many encounter connection issues, especially server connection failures that disrupt login and game sessions. These problems can be frustrating and detract from the experience — but they usually have clear causes and effective solutions. This guide walks you through why these failures happen, how to fix them, and how to use tools like LagoFast Game Booster to optimize your network for Arknights: Endfield. 

Part 1: Introduction

Part 2: Common Server Connection Issues in Arknights: Endfield

Part 3: Why Do I Keep Getting Unable to Connect to the Server?

Part 4: How to Fix Unable to Connect to Server in Arknights: Endfield

Part 5: Other Way to Fix Arknights: Endfield Connection Issues

Part 6: FAQs

Part 1: Introduction

Arknights: Endfield is a real-time 3D strategy RPG set in the larger Arknights universe. Players take on the role of an “Endministrator,” commanding squads and navigating a dangerous world filled with strategic battles and story-rich progression. The game officially targets early 2026 for a global launch on PC (Windows), PlayStation 5, and mobile (iOS & Android). 

The game’s massive open environments, deep RPG systems, and persistent online connectivity mean that players must stay connected to the game servers at all times — even in modes that feel “offline” — to synchronize data, save progress, and ensure the integrity of shared world events. 

While this always-online requirement brings a richer multiplayer experience, it also means that server or network issues can quickly interrupt play. Understanding why these connection issues occur can help you fix them faster and get back into the action.

Part 2: Common Server Connection Issues in Arknights: Endfield

When Arknights: Endfield fails to connect, the issue is not always on Hypergryph’s side. Based on player reports from test phases, the most common causes include the following:

1. Server Overload or Scheduled Maintenance

During beta tests, updates, or peak play hours, Endfield servers may become temporarily overloaded. When this happens, players may encounter login failures, timeouts, or sudden disconnections even if their own internet connection is stable.

2. High Latency Due to Long-Distance Routing

Players connecting to servers outside their primary region may experience high ping, packet loss, or unstable authentication. Inefficient routing between your ISP and the game servers can cause connection attempts to fail before a session is fully established.

3. Unstable Local Network Environment

Fluctuating Wi-Fi signals, ISP throttling during peak hours, DNS issues, or intermittent packet loss can all prevent Arknights: Endfield from maintaining the persistent connection it requires.

4. Firewall or Security Software Blocking Game Traffic

Windows Firewall, third-party antivirus software, or strict router security settings may block required ports or outbound connections, causing server handshake failures during login.

Understanding which of these applies to your situation makes troubleshooting much faster and more effective.

Part 3: Why Do I Keep Getting Unable to Connect to the Server?

Repeated “Unable to connect to server” errors do not necessarily mean that Arknights: Endfield servers are offline. In most cases, the problem occurs somewhere along the connection path between your device and the game server.

Even if your internet works normally for browsing or streaming, real-time online games are far more sensitive to packet loss, unstable routing, and short connection drops. Because Endfield constantly synchronizes player data with the server, any interruption — even a brief one — can cause login failures or forced disconnections.

In short, Arknights Endfield connection errors are usually the result of multiple factors working together: server load, network routing efficiency, local network stability, and system-level restrictions.

Part 4: How to Fix Unable to Connect to Server in Arknights: Endfield

One of the most effective ways to resolve persistent connection issues — especially if they stem from routing or latency problems — is to optimize your network using a specialized tool like LagoFast(LagoFast Game Booster - Get No Lag and Lower Ping)  Game Booster. Unlike simple VPNs, LagoFast intelligently routes your game data through faster, more stable pathways, reducing packet loss, lowering ping, and helping you maintain a steady connection to Arknights: Endfield’s servers. 

Step-by-Step Guide to Using LagoFast:

1. Download and Install LagoFast:
Start by clicking the free trial or download link for LagoFast.

Free Trial

2. Launch LagoFast:
Open the app and use the search function to find “Arknights: Endfield.”

3. Select the Best Connection Path:
LagoFast lists available servers and routes. Choose the server path with the lowest latency based on your region — or use the “Smart Boost”/Auto option if available. The booster will automatically route your traffic through optimized nodes.

4. Start Boosting:
Hit Boost or Start to let LagoFast optimize your network. You can view real-time ping and packet loss metrics before launching the game.

5. Launch Arknights: Endfield:
With LagoFast running, launch the game as usual. The optimized connection will help prevent disconnects, reduce high latency issues, and keep your server connection stable during gameplay.

LagoFast’s real-time optimization helps maintain steady game traffic, making login and server communication significantly more reliable — especially for players in regions far from the game’s primary servers.

How to use LagoFast Game Booster on Mobile

Step 1: Search “LagoFast Mobile booster” in the Google App Store or Apple App Store. Alternatively, click here to download the APK File.

Step 2: Search Arknights: Endfield and click the result.

Step 3: Choose the Server you like, then click the Boost button.

Step 4: After completing the above network optimization settings, the FPS drops issue will be easily resolved.

By integrating LagoFast into your gaming setup, you can achieve a more responsive and enjoyable Arknights: Endfield Mobile experience.​

Part 5: Other Way to Fix Arknights: Endfield Connection Issues

When Arknights: Endfield fails to connect to the server, doesn’t load properly, or keeps disconnecting, the root cause may differ significantly between PC and Mobile devices. Below is a breakdown of tailored solutions for each platform — helping you troubleshoot more effectively.

PC: Fixing Connection Issues on Windows

Even on PC, where most heavy-online action RPGs are played, connection problems can stem from several system or network constraints. Try the following targeted methods:

1. Verify Your Network & Reset Router

A quick router reset can fix intermittent packet loss or routing errors:

• Power off your modem/router.
• Wait ~60 seconds.
• Power them back on and reconnect your PC.

This often clears transient network issues that cause unstable server connections.

2. Check Firewall and Antivirus Settings

Windows Firewall or third-party security software can block game traffic if not properly configured:

• Open Windows Security → Firewall & network protection.
• Click Allow an app through firewall.
• Add the Arknights: Endfield game client and launcher.
• Enable both Private and Public boxes to ensure outbound connection is permitted.

This ensures the game isn’t unintentionally blocked when communicating with the server.

3. Use a Wired Ethernet Connection

Wi-Fi interference or unstable signals often amplify latency, leading to login failures or frequent disconnects. A wired Ethernet connection provides better signal stability, lower packet loss, and higher consistency — essential for always-online games like Endfield. 

4. Close Bandwidth-Heavy Background Programs

Streaming apps, file downloads, cloud sync clients, or large updates running in the background can consume bandwidth and interrupt game traffic. Before launching the game, close any high-usage applications. 

5. Check Server Status & Game Updates

Sometimes the issue isn’t on your side — servers may be undergoing maintenance or temporary overload. Check:

• Official Endfield site for notices
• In-game launcher messages
• Official social accounts for real-time updates
• Third-party outage trackers like DownDetector for community reports

Confirming server status first saves you time troubleshooting local problems unnecessarily.

Mobile: Fixing Connection Issues on Android and iOS

Mobile devices bring their own set of connectivity quirks — especially because they switch between Wi-Fi and cellular data, and often have stricter system-level network restrictions. Here are the best mobile-specific fixes:

1. Toggle Network Type

If the game fails to connect using Wi-Fi, switching between mobile data and Wi-Fi can help:

• Turn off Wi-Fi and try mobile data.
• If that works, switch back to Wi-Fi.
• If issues persist, reset network settings.

In some cases, this simple toggle clears cached or conflicted network pathways.

2. Reset Network Settings / Reconnect Wi-Fi

Mobile network stacks can get stuck or misconfigured:

• iOS: Settings → General → Reset → Reset Network Settings
• Android: Settings → System → Reset → Reset Wi-Fi, mobile & Bluetooth

After resetting, reconnect to your preferred Wi-Fi and try launching Endfield again. 

3. Clear App Cache / Reinstall the Game

If repeated connection errors occur after a successful login, corrupted cache data or outdated resource bundles may be the culprit. On mobile:

• Go to your device’s App Info
• Tap Storage → Clear Cache
• Relaunch the game

If the problem continues, uninstall and reinstall with the latest version from your app store.

4. Disable VPN or Proxy Services

Generic VPN/proxy services can introduce delays and unstable routing — especially in an always-online game like Endfield. Unless the VPN is specifically optimized for gaming, it may worsen connection quality rather than improve it. 

5. Check Account Login Method (Cloud/Play Services)

On mobile devices — especially for test builds — login errors may occur due to how your account is tied to Play Store or Apple Game Center credentials. Re-logging into your account, removing and re-adding your cloud login can sometimes fix authentication issues that appear to be network errors. users have reported similar behavior leading to login blocks or errors before accessing the main game. 

6. Ensure Sufficient Background Data Access

Android users should make sure that Background Data and Unrestricted Data Usage are allowed for Endfield so that the game can maintain a persistent connection even when running in the background or when screen is off.

Part 6: FAQs

Q: Does “Unable to connect to server” mean Arknights: Endfield servers are down?

A: Not always. The error can also be caused by local network instability, routing issues, or firewall restrictions.

Q: Why does Arknights: Endfield require a constant internet connection?

A: The game uses persistent online connectivity for data synchronization, progression tracking, and shared world systems.

Q: Will faster internet speed fix connection issues?

A: Stability and routing quality matter more than raw download speed for online games.

Q: What should I do if none of the fixes work?

A: Check official server announcements and contact Endfield support through the in-game help system.

Conclusion

Connection issues in Arknights: Endfield can arise from many sources — from overloaded servers to local network problems and inefficient routing — but most can be resolved with the right steps. Start by checking server status, then adjust local settings such as firewalls or bandwidth usage. For persistent latency issues, LagoFast Game Booster provides a powerful solution by intelligently routing your traffic for lower ping and higher stability. 

With a stable connection, you’ll spend less time disconnected and more time exploring the immersive world of Arknights: Endfield, commanding your squad and enjoying the full strategic RPG experience.