What "Network Anomaly Detected" Actually Means

When GameLoop — or the game inside it — shows a Network Anomaly Detected warning, it means the game's anti-cheat or server-side traffic monitor has flagged your connection as unusual. In most cases this is not a ban and not caused by your hardware. It's triggered by one of four things:

  1. A VPN or proxy is active (game servers detect datacenter IPs)
  2. A conflicting network adapter (virtual network cards from other emulators, VMware, or previous software)
  3. A DNS or firewall rule blocking the game's data traffic
  4. A game update or server outage — the message appears because the game can't handshake with its CDN

This guide covers every fix in order from fastest to most thorough.


Quick Diagnosis Table

SymptomMost Likely CauseJump to Fix
"Network anomaly detected" only in CODM/PUBGVPN or proxy activeFix 1
Same error after updateServer-side temporaryFix 2
Error on first launch of GameLoopVirtual adapter conflictFix 3
Error clears when hotspot usedISP-level block or DNSFix 4
Error only in competitive ranked matchesAnti-cheat traffic inspectionFix 5
Error accompanied by connection timeoutFirewall blocking game processFix 6
Error after installing another emulatorConflicting virtual NICFix 7

Fix 1: Disable VPN, Proxy, and Any Traffic Tunneling

This is the single most common cause. Even a VPN that's "disconnected" in its dashboard may still have its virtual adapter active, which anti-cheat software flags.

Step 1: Exit your VPN app completely — don't just toggle off, right-click its tray icon and Quit or Exit.

Step 2: Open Internet Explorer settings (press Win+R, type inetcpl.cpl, press Enter) → Connections tabLAN Settings → make sure "Use a proxy server for this LAN" is unchecked.

Step 3: Open Settings → Network & Internet → VPN in Windows. Remove any VPN profiles listed there.

Step 4: Open Settings → Network & Internet → Proxy → set both "Automatically detect settings" to Off and "Use a proxy server" to Off.

After doing all four steps, restart GameLoop and test.

Note for users who need a VPN for other reasons: Game anti-cheat systems ban by IP reputation. Even a residential VPN may trigger network anomaly warnings in strict anti-cheat games (CODM, PUBG Mobile). The only reliable fix is no VPN while gaming.


Fix 2: Check Game Server Status First (Don't Waste Time)

Before any troubleshooting, confirm the problem isn't server-side.

If the network is confirmed up, proceed.


Fix 3: Flush DNS and Switch to a Reliable DNS Server

ISPs sometimes route gaming traffic through congested or filtered DNS servers that cause handshake failures with game CDN servers.

Step 1: Open Command Prompt as Administrator (Win+S → type cmd → right-click → Run as administrator).

Step 2: Run these commands in sequence:

ipconfig /flushdns
ipconfig /release
ipconfig /renew
netsh winsock reset

Step 3: Restart your PC after running all four.

Step 4 (if error persists): Change your DNS server.

On Windows:

  1. Open Control Panel → Network and Internet → Network Connections
  2. Right-click your active network adapter → Properties
  3. Select Internet Protocol Version 4 (TCP/IPv4)Properties
  4. Select "Use the following DNS server addresses"
  5. Set Primary DNS: 1.1.1.1 (Cloudflare) — Secondary DNS: 8.8.8.8 (Google)
  6. Click OK → close

Test the game again.


Fix 4: Remove Conflicting Virtual Network Adapters

Every Android emulator, VPN client, and virtual machine software installs its own virtual network adapter. Multiple virtual adapters confuse GameLoop's network stack and can trigger false "network anomaly" reports.

Step 1: Open Device Manager (Win+X → Device Manager).

Step 2: Expand Network adapters.

Step 3: Look for entries with these names (right-click → Disable):

Step 4: Disable (not uninstall) each one, then test GameLoop.

Important: Only disable one adapter at a time and retest. Your real Ethernet/Wi-Fi adapter name will contain your actual hardware (e.g., "Intel Wi-Fi 6 AX201," "Realtek PCIe GbE Family Controller") — never disable that one.


Fix 5: Add GameLoop Executables to Windows Firewall Whitelist

Windows Firewall may be blocking the game's outbound network calls without showing an error dialog.

Step 1: Press Win+S, search "Allow an app through Windows Firewall" → open it.

Step 2: Click "Change settings" (requires admin).

Step 3: Click "Allow another app..." and add these executables with both Private and Public checked:

File locationExecutable
C:\Program Files\TxGameAssistant\AppMarket\GameLoop.exe
C:\Program Files\TxGameAssistant\MuMuPlayer12\MuMuPlayer.exe
C:\Program Files\TxGameAssistant\MuMuPlayer12\MuMuVMMHeadless.exe
Game folder (inside AppData or GameLoop)com.activision.callofduty.shooter (CODM)

Step 4: If you're using a third-party antivirus, add the entire GameLoop folder to the exclusions list:

After adding exclusions, restart GameLoop without rebooting — many antivirus changes take effect immediately.


Fix 6: Disable Conflicting Network Features in Windows

Some Windows network optimization features interfere with UDP game packets that GameLoop relies on.

Step 1: Open Network Connections (Win+R → ncpa.cpl).

Step 2: Right-click your active adapter → Properties.

Step 3: Uncheck these if present:

Step 4: Open Device Manager → expand your network adapter → right-click → PropertiesAdvanced tab.

Look for and adjust these settings:

SettingRecommended value
Large Send Offload v2 (IPv4)Disabled
Large Send Offload v2 (IPv6)Disabled
TCP Checksum Offload (IPv4)Disabled
Receive Side ScalingEnabled

These offload settings occasionally cause packet corruption that anti-cheat reads as anomalous traffic.


Fix 7: Uninstall and Reinstall GameLoop's Network Component

GameLoop installs its own virtual network bridge for Android's network virtualization. If this component becomes corrupted (after a Windows update, another emulator install, or a failed GameLoop update), it needs to be reinstalled.

Step 1: Close GameLoop completely — use Task Manager to kill all processes (MuMuPlayer.exe, MuMuVMMHeadless.exe, HDAgent.exe, TxGameUpdate.exe).

Step 2: Open Control Panel → Programs → Programs and Features.

Step 3: Find entries containing "MuMu" or "TxGameAssistant" — do NOT uninstall GameLoop itself yet.

Step 4: Look for a "MuMuPlayer12" network component or driver and uninstall it.

Step 5: Relaunch GameLoop — it will detect the missing component and reinstall it automatically on first launch.

If this doesn't work, proceed to a clean reinstall:

  1. Uninstall GameLoop via Programs and Features
  2. Delete C:\Program Files\TxGameAssistant\ manually
  3. Delete %AppData%\GameLoop\ manually
  4. Delete %AppData%\MuMu Emulator For PC\ manually
  5. Reboot
  6. Download fresh installer from gameloop.fun (official only)
  7. Run as Administrator

Fix 8: Test with Mobile Hotspot (Isolates ISP vs Hardware)

If the error clears when you switch from your home Wi-Fi/Ethernet to a mobile hotspot (phone data), the problem is your ISP's network — not GameLoop.

ISPs in some countries (Turkey, India, UAE, others) apply deep packet inspection (DPI) that intercepts and blocks specific gaming traffic patterns. Solutions:

For ISP-side blocking:


Fix 9: Reinstall CODM or PUBG Mobile Inside GameLoop

If the network anomaly is game-specific (other games in GameLoop work fine), the game's own network certificate or cache is corrupted.

Step 1: Inside GameLoop, go to My Games → long-press the game icon → Uninstall.

Step 2: Clear GameLoop's game cache: go to GameLoop SettingsStorageClear cache.

Step 3: Also clear the game's AppData inside GameLoop: File Manager (in GameLoop's sidebar) → navigate to Android/data/com.activision.callofduty.shooter/ (CODM) → delete the folder.

Step 4: Reinstall the game from GameLoop's Game Center.

This forces a fresh network certificate download and clears any corrupted session data.


Specific Games: Network Anomaly Fixes

Call of Duty Mobile Network Anomaly

PUBG Mobile Network Anomaly

Free Fire Network Anomaly


Network Anomaly vs. Other Error Types

ErrorMeaningFix
"Network Anomaly Detected"Anti-cheat flagged your connectionThis guide
"Connection timeout" / "Unable to connect"GameLoop itself can't reach internetFix 3 + Fix 5
"Please check your network"Game loading screen failureFix 3 + Fix 9
"Unstable network" in-matchPacket loss / high pingFix 6 + wired Ethernet
"Authentication failed"Account session expiredRe-login inside GameLoop
"Game version mismatch"Update neededUpdate from Game Center

Summary: Fastest Resolution Path

  1. Disable VPN completely (Fix 1) — solves ~60% of cases
  2. Check server status (Fix 2) — rules out outage before wasting time
  3. Flush DNS + change to 1.1.1.1 (Fix 3) — solves ~20% of remaining cases
  4. Disable virtual adapters (Fix 4) — for multi-emulator users
  5. Firewall whitelist (Fix 5) — for antivirus-heavy setups
  6. Mobile hotspot test (Fix 8) — confirms ISP-side blocking
  7. Clean reinstall (Fix 7) — last resort

Frequently Asked Questions

Does "network anomaly detected" mean I'm banned? No. A ban would show a specific ban message with a duration or appeal link. Network anomaly is a connection flag, not an account action. You can verify your account status at the game's official site.

Will using a VPN fix the network anomaly error? Usually not — and often makes it worse. Most anti-cheat systems flag VPN IPs as higher risk. The anomaly is about connection pattern, not geography.

Why does the error only appear in ranked matches? Ranked matches trigger stricter anti-cheat inspection. The same connection that works fine in casual matches may be flagged in ranked due to tighter traffic analysis.

Does GameLoop itself cause the network anomaly? GameLoop is whitelisted by Tencent for CODM and PUBG Mobile — using the official emulator is not a cause. Third-party emulators (LDPlayer, BlueStacks) are not whitelisted and are much more likely to trigger anomaly detection.

My Wi-Fi shows connected but the game won't reach servers — why? GameLoop uses its own virtual network bridge. Windows showing "connected" doesn't guarantee GameLoop's virtual adapter can pass traffic. Check Fix 4 (conflicting virtual adapters) and Fix 5 (firewall).

How do I know if Hyper-V is causing the issue? Open Task Manager → Performance tab → CPU → if "Virtualization" shows "Enabled" and there's a separate "Hyper-V" section, Hyper-V is active. See the PUBG Mobile section above for the disable steps.

The error disappeared for a day then came back — why? This usually means the game's server-side anomaly filter was temporarily relaxed (maintenance) and then reinstated. If it happens cyclically, the root cause (Fix 1–6) is still present and should be resolved.


Last verified: August 2026. GameLoop version: 9.x (MuMuPlayer12 engine). Applies to CODM, PUBG Mobile, Free Fire, and other competitive titles in GameLoop.