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:
- A VPN or proxy is active (game servers detect datacenter IPs)
- A conflicting network adapter (virtual network cards from other emulators, VMware, or previous software)
- A DNS or firewall rule blocking the game's data traffic
- 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
| Symptom | Most Likely Cause | Jump to Fix |
|---|---|---|
| "Network anomaly detected" only in CODM/PUBG | VPN or proxy active | Fix 1 |
| Same error after update | Server-side temporary | Fix 2 |
| Error on first launch of GameLoop | Virtual adapter conflict | Fix 3 |
| Error clears when hotspot used | ISP-level block or DNS | Fix 4 |
| Error only in competitive ranked matches | Anti-cheat traffic inspection | Fix 5 |
| Error accompanied by connection timeout | Firewall blocking game process | Fix 6 |
| Error after installing another emulator | Conflicting virtual NIC | Fix 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 tab → LAN 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.
- CODM: Check @CODMobile_EN on Twitter/X or the official Discord — outages always trend there first.
- PUBG Mobile: Check @PUBGMobile on Twitter/X.
- General: Search
[game name] server statusornetwork anomalyon Reddit (r/CallOfDutyMobile, r/PUBGMobile) — if multiple users report it simultaneously, wait 30–60 minutes before troubleshooting your system.
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:
- Open Control Panel → Network and Internet → Network Connections
- Right-click your active network adapter → Properties
- Select Internet Protocol Version 4 (TCP/IPv4) → Properties
- Select "Use the following DNS server addresses"
- Set Primary DNS:
1.1.1.1(Cloudflare) — Secondary DNS:8.8.8.8(Google) - 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):
- Any entry containing "TAP," "VPN," "Virtual," "Tunnel," or "WAN Miniport"
- Adapters from other emulators (LDPlayer Virtual Ethernet, NoxPlayer Virtual NIC, BlueStacks Virtual Adapter)
- VirtualBox Host-Only Ethernet Adapter or VMware Virtual Ethernet Adapter
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 location | Executable |
|---|---|
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:
C:\Program Files\TxGameAssistant\%AppData%\GameLoop\
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:
- QoS Packet Scheduler (can throttle gaming UDP)
- Internet Protocol Version 6 (TCP/IPv6) — some games' anti-cheat systems flag dual-stack as anomalous when IPv6 traffic doesn't route correctly
Step 4: Open Device Manager → expand your network adapter → right-click → Properties → Advanced tab.
Look for and adjust these settings:
| Setting | Recommended value |
|---|---|
| Large Send Offload v2 (IPv4) | Disabled |
| Large Send Offload v2 (IPv6) | Disabled |
| TCP Checksum Offload (IPv4) | Disabled |
| Receive Side Scaling | Enabled |
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:
- Uninstall GameLoop via Programs and Features
- Delete
C:\Program Files\TxGameAssistant\manually - Delete
%AppData%\GameLoop\manually - Delete
%AppData%\MuMu Emulator For PC\manually - Reboot
- Download fresh installer from gameloop.fun (official only)
- 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:
- Try a gaming-optimized DNS (1.1.1.1 or 8.8.8.8 as above)
- Contact your ISP and ask if gaming or streaming traffic is being QoS-throttled
- Some users report switching from a Wi-Fi to wired Ethernet resolves this — the ISP's QoS policies may only apply to Wi-Fi sessions on certain routers
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 Settings → Storage → Clear 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
- CODM uses a strict anti-cheat that flags VPN IPs, shared IP addresses (common in student dorms / corporate networks), and irregular UDP patterns
- If you're on a shared network (apartment complex, school, office), multiple players on the same public IP can trigger anomaly detection
- Solution: use your phone's hotspot to confirm — if it clears, your shared network is the issue
PUBG Mobile Network Anomaly
- PUBG Mobile uses a different anti-cheat (SHIELDv2 integration) — it checks the network path more aggressively during ranked matches
- Common cause: Hyper-V enabled on Windows creates a virtual network switch that changes how GameLoop's traffic appears to PUBG servers
- Fix: disable Hyper-V (Win+R →
optionalfeatures→ uncheck Hyper-V → restart)
Free Fire Network Anomaly
- Free Fire is more tolerant of NAT types but flags specific DNS patterns
- Try switching DNS to
8.8.4.4(Google secondary) +1.0.0.1(Cloudflare secondary) — a minor variation that resolves some Free Fire-specific patterns
Network Anomaly vs. Other Error Types
| Error | Meaning | Fix |
|---|---|---|
| "Network Anomaly Detected" | Anti-cheat flagged your connection | This guide |
| "Connection timeout" / "Unable to connect" | GameLoop itself can't reach internet | Fix 3 + Fix 5 |
| "Please check your network" | Game loading screen failure | Fix 3 + Fix 9 |
| "Unstable network" in-match | Packet loss / high ping | Fix 6 + wired Ethernet |
| "Authentication failed" | Account session expired | Re-login inside GameLoop |
| "Game version mismatch" | Update needed | Update from Game Center |
Summary: Fastest Resolution Path
- Disable VPN completely (Fix 1) — solves ~60% of cases
- Check server status (Fix 2) — rules out outage before wasting time
- Flush DNS + change to 1.1.1.1 (Fix 3) — solves ~20% of remaining cases
- Disable virtual adapters (Fix 4) — for multi-emulator users
- Firewall whitelist (Fix 5) — for antivirus-heavy setups
- Mobile hotspot test (Fix 8) — confirms ISP-side blocking
- 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.