Error code 2618‑0513 on the Nintendo Switch means the console failed to complete the peer‑to‑peer (P2P) matchmaking process—usually due to network issues like NAT type, firewall, or ISP restrictions.
✅ What to Try First
1. Reattempt matchmaking
Simply cancel and retry—the error often resolves itself on a second attempt.
2. Run Switch’s Internet Test
Go to System Settings → Internet → Test Connection to check:
NAT type (A is ideal, B may work, C is problematic)
Download/upload speeds.
🛠 Network Troubleshooting
3. Router power‑cycle
Unplug your router/modem for ~30 seconds, then plug it back in. Reddit users report reliability after physically powering off .
4. Improve NAT type / network setup
Enable UPnP or place the Switch in the DMZ
Ensure it’s not behind double NAT (like mesh or extender setups).
One user fixed the error by assigning a static IP to the Switch and enabling DMZ on their router.
5. Avoid CG-NAT networks (e.g. cellular hotspots)
ISP‑managed CG-NAT (common in 4G/5G or mobile ISPs) blocks direct connections. Users on T‑Mobile gateways frequently see this error. If you’re on mobile, try switching to wired broadband.
6. Update router firmware / factory reset
Check for firmware updates or reset router to factory defaults—per Nintendo’s advice. This clears misconfigurations blocking NAT traversal.
7. Try alternate DNS (optional)
Some users use DNS like Google’s (8.8.8.8 / 8.8.4.4) or Cloudflare (1.1.1.1) without consistent results.
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🧩 Community-Published Fixes
Using DMZ: “I added my Switch in my router’s DMZ… it worked for me!”
Power outage fix: “physically unplugging the router, waiting 30 seconds… did the trick for me.”
Mobile router APN adjustment: Switching APN settings (e.g., from CG-NAT to full-pass APN) resolved issues on 4G routers .
🧪 Quick Fix Checklist
| Step | Action |
|---|---|
| 🕒 | Retry matchmaking |
| 📶 | Test connection, check NAT type |
| 🔌 | Power-cycle router/modem |
| ⚙️ | Enable UPnP or DMZ for your Switch |
| 🕸️ | Avoid CG-NAT mobile/5G networks |
| 🔄 | Update firmware or reset router |
| 🌐 | Try wired Ethernet if possible |
| 🌍 | Experiment with DNS settings |
📞 When to Contact Support
If you’re on a mobile ISP with CG‑NAT and can’t change settings
If none of the above work even after router updates/reset
Contact your ISP (to request public IP or IPv6 support) or router manufacturer for help with port/NAT configuration.
Final Thoughts 🎮
In most cases, resolving error 2618‑0513 means ensuring your Switch has a public, open NAT path—not blocked by CG‑NAT, strict firewall, or misconfigured router. Try the steps above—especially enabling DMZ or power‑cycling the router.
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