Network troubleshooting technician providing live chat help

Joe B.

Reviewed for technical accuracy

Specialities: Home networking, Xbox & PlayStation NAT issues, Wi-Fi routers, modems, port forwarding, UPnP, ISP setup

Fix NAT Type Strict on Xbox — open NAT for party chat, multiplayer & Xbox Live

Technician avatar Technician
Hi! We can absolutely sort out your NAT Type Strict on Xbox and get you back into party chat and online games. To start, I just need a quick picture of your setup.

On your Xbox network screen, does it actually say NAT Type: Strict, Moderate, or Double NAT detected? Are you on an Xbox One, Xbox Series X, or Xbox Series S?

Also, how is the console connected — wired Ethernet directly to the router, or Wi-Fi? And do you have just one box from your ISP, or is it an ISP modem/router combo plus your own router (for example a Netgear, TP-Link, ASUS, or Linksys plugged into the ISP router)?

Finally, what exactly breaks when you see NAT type strict — you can’t join friends’ parties, can’t host games, get “can’t connect to Xbox Live party” errors, or specific game errors like “unable to join session”?
Customer
I’m on an Xbox Series X. In Network settings it shows NAT Type: Strict and sometimes mentions Double NAT. I can sign into Xbox Live and browse the store, but I can’t join my friends’ party chat in games like Call of Duty and Fortnite. It either kicks me out of the party or says I’m not able to join multiplayer sessions. The Xbox is wired into my own Netgear router, which is plugged into the ISP modem/router box in the hallway.
Technician avatar Technician
Thanks, that explains a lot. A NAT Type Strict on Xbox basically means your console is stuck behind a firewall that isn’t opening the right ports for Xbox Live multiplayer and party chat.

The most common causes are:
• Double NAT: your ISP router is doing NAT and your Netgear router is also doing NAT, so the Xbox is behind two routers.
• UPnP (Universal Plug and Play) disabled on the router, so the Xbox can’t automatically open the ports it needs.
• No port forwarding or DMZ for the console, especially on older routers or strict firewall setups.
• ISP using CGNAT (carrier-grade NAT), where everyone shares the same public IP, making Open NAT impossible without changes on their side.

We’ll tackle this in stages: first we’ll fix the Double NAT on Xbox, then we’ll use UPnP or port forwarding to move you from Strict NAT to Open NAT so party chat and matchmaking work normally.
Customer
Yeah, when I run “Test NAT type” it sometimes shows a warning about Double NAT detected. The Xbox is plugged into the Netgear. The Netgear is then plugged into the ISP router. Wi-Fi is on for both. I didn’t really change any advanced settings like UPnP or port forwarding. I just want Open NAT on Xbox so I can join parties reliably.
Technician avatar Technician
Perfect, so we’re dealing with the classic “router behind a router” situation — that’s exactly what causes Xbox Series X NAT Type Strict and the Double NAT warning.

Step A — Decide which box is the real router
We want only one device doing NAT and firewall for your home network.

1) Log in to your ISP modem/router’s web page from a PC or phone (usually something like 192.168.0.1 or 192.168.1.1).
2) Look for modes called Bridge mode, Modem only, or Disable router / Wi-Fi. When enabled, this turns the ISP box into a simple modem so your Netgear becomes the only router.
3) If there’s an option called DMZ on the ISP box, another alternative is to put your Netgear’s WAN IP into DMZ on the ISP router, so all ports are forwarded to your Netgear.
4) After applying changes, reboot the ISP router and your Netgear router.

Once that’s done, run the Test network connection and Test NAT type again on the Xbox. Tell me if the “Double NAT detected” warning disappears and whether the NAT changes from Strict to Moderate or Open.
Customer
I put the ISP box into bridge mode and rebooted everything. Now the Xbox no longer shows “Double NAT detected”. The NAT type changed from Strict to Moderate. I can sometimes join games, but party chat is still unreliable and occasionally says “Teredo is unable to qualify” or that my network settings are blocking chat.
Technician avatar Technician
Great job — removing Double NAT is the big first win. Now we’ll push that NAT type Moderate to Open NAT on Xbox.

Step B — Turn on UPnP and clear old mappings
1) Log in to your Netgear router from a browser.
2) Go to the UPnP section. Make sure UPnP is enabled. This allows the Xbox to request the ports it needs for Xbox Live, Teredo, and party chat.
3) If you see a UPnP table full of old entries (old consoles, PCs, etc.), clear or reset it, then apply changes.
4) Reboot the Netgear router and then fully power cycle the Xbox (hold the power button for 10 seconds, unplug for 30 seconds, then plug back in).
5) On the Xbox, go to Settings > General > Network settings and run Test NAT type and Test multiplayer connection.

Ideally, the NAT should now show as Open, and the Teredo is unable to qualify error should be gone. If it still says NAT Type Strict Xbox, we’ll add port forwarding or use DMZ for your console’s IP address.
Customer
UPnP was disabled, so I turned it on and cleared the UPnP table like you said. After rebooting everything, the Xbox now shows NAT Type: Moderate most of the time, but sometimes it still flips back to Strict. Party chat works for a bit and then drops. I only have this one Xbox on the network.
Technician avatar Technician
Got it. If UPnP alone is unstable, we’ll give the Xbox a dedicated lane using static IP plus port forwarding (or DMZ). This is the most reliable way to get rid of NAT Type Strict on Xbox One / Series X.

Step C — Assign a static IP to your Xbox
1) On the Xbox, go to Settings > Network > Advanced settings and note the current IP address, gateway, and DNS.
2) Switch the IP settings from Automatic to Manual, and give the Xbox an IP outside the DHCP range but on the same subnet (for example, if your router is 192.168.1.1 and hands out 192.168.1.2–100, set the Xbox to something like 192.168.1.200).
3) Keep the same gateway (router IP) and DNS, or use known DNS like 1.1.1.1/8.8.8.8 if your router allows it.

Step D — Forward Xbox Live ports
4) In the Netgear router, go to the Port Forwarding / Port Triggering section.
5) Add forwarding rules for your Xbox’s static IP for the required Xbox Live ports (commonly TCP/UDP 3074, UDP 88, 500, 3544, 4500).
6) Apply and save settings, then reboot the router and Xbox again.
7) Run Test NAT type one more time.

With a static IP plus port forwarding or placing the Xbox IP into DMZ on the router, you should see NAT Type: Open and much more stable party chat and matchmaking.
Customer
I gave the Xbox a static IP and forwarded the ports you listed. After rebooting, the test now shows NAT Type: Open and multiplayer tests pass. I can join parties and games without any errors. The only thing I’ve noticed is that sometimes after the Xbox has been off overnight, it briefly shows Moderate NAT before going back to Open.
Technician avatar Technician
That’s a big success — moving from NAT Type Strict to Open NAT on Xbox is exactly what we wanted. A brief “Moderate” during startup is usually just the console re-negotiating ports; the important thing is that it consistently ends up on Open and doesn’t block party chat.

A few things you can do to keep it stable:
• Keep the Xbox on a wired Ethernet connection whenever possible; Wi-Fi extenders and mesh systems can sometimes cause inconsistent NAT type on Xbox.
• Make sure you don’t add a second router or “game accelerator” device in front of the Netgear — that can reintroduce Double NAT on Xbox.
• Avoid manually changing the Xbox IP now that it’s static and port forwarded; that address (for example 192.168.1.200) is what your rules depend on.

If you ever add a second Xbox console, we may need to tweak the setup again (UPnP plus IPv6 support or a different port strategy) so both consoles can avoid NAT Type Strict Xbox at the same time.
Customer
I’m using wired Ethernet straight from the Netgear to the Xbox now, no range extenders, and I’ll leave the static IP as is. So far everything seems stable: party chat, cross-play with friends on PC and PlayStation, no more “can’t join” messages. Is there anything else I should change so this NAT strict issue doesn’t randomly come back after a firmware update or power cut?
Technician avatar Technician
Great question — now that you have Open NAT on Xbox Series X, we want to make it “stick” so you don’t have to redo everything every few weeks.

Step E — Make your Open NAT permanent
• In the Netgear settings, turn on automatic firmware updates if available, or check for updates every month. New firmware often improves UPnP and fixes NAT bugs for Xbox Live.
• Take a screenshot or note of your Xbox’s static IP and the port forwarding rules you’ve created. If you ever reset the router, you can quickly recreate them instead of starting from scratch.
• Keep the ISP modem in bridge mode. If a technician ever factory-resets it, make sure it doesn’t go back to “router mode” and recreate Double NAT.
• If your ISP ever moves you behind CGNAT and Open NAT becomes impossible, contact them and ask for a public IPv4 address or gamer-friendly profile; this can be needed for hosting games or joining some peer-to-peer lobbies.

With those in place, you should stay on Open NAT, and if “NAT Type Strict Xbox” ever shows up again, you’ll know exactly which steps to revisit.
Customer
That all makes sense. I noted down the static IP and port rules and will keep the ISP router in bridge mode. Right now the Xbox consistently shows Open NAT and party chat works perfectly. Thanks for walking me through all the steps and explaining what NAT Type Strict actually meant.
Technician avatar Technician
You’re very welcome — glad we turned that NAT Type Strict into Open NAT and got your Xbox Live multiplayer working again.

Quick recap: To fix NAT Type Strict on Xbox, you remove Double NAT by putting the ISP box into bridge mode, enable UPnP on the main router, give the console a static IP address, and either use port forwarding or DMZ so Xbox Live traffic can reach your console. That combination almost always resolves strict NAT, party chat failures, and “can’t join session” errors.

If you ever switch routers or ISP and your Xbox goes back to NAT strict, you can open a chat with an expert and we’ll re-tune the new setup with you in real time.
Customer
Perfect, I’ll keep this checklist handy. Everything’s working now — no more strict NAT or party chat drops. Thanks again for the detailed help!
Technician avatar Technician
Any time! If a friend complains that their NAT type is Strict on Xbox, they see Double NAT detected, or they can’t join Xbox Live parties, you can share this checklist — or just tell them to start a chat with an expert and we’ll help them get to Open NAT as well.

Quick answer: the accepted fix for NAT Type Strict on Xbox

Accepted fix for NAT Type Strict on Xbox: remove Double NAT by putting your ISP modem/router into bridge mode or using DMZ, enable UPnP on your main router, give your Xbox a static IP, and set up port forwarding (or DMZ) for Xbox Live ports so the console reaches Open NAT for multiplayer and party chat.

Why Xbox shows NAT Type Strict or Double NAT

Most NAT Type Strict Xbox problems are not caused by the console itself, but by how your router and modem are configured. If your ISP gives you a modem/router combo and you plug your own router into it, you create Double NAT, which makes it hard for Xbox Live to open the ports used for party chat and online multiplayer. Disabling router mode on the ISP box or using bridge mode usually fixes this.

Other common causes of a strict NAT type on Xbox One or Xbox Series X|S include UPnP disabled, no port forwarding, or very aggressive firewall rules. In some cases, your ISP puts you behind CGNAT (carrier-grade NAT), which makes it impossible to host games or get Open NAT unless they move you to a public IP address. Step-by-step testing — starting at the Xbox network test, then checking the router, then the ISP — lets you see exactly where NAT is being restricted.

How to check whether NAT Type Strict is caused by Xbox, router, or ISP

To quickly narrow down a NAT Type Strict Xbox issue, start from the console and work outward. On the Xbox, run Test network connection and Test NAT type. If you see Double NAT detected or Teredo is unable to qualify, it’s almost always a router or ISP problem rather than a console hardware fault.

Next, log into your router and confirm whether UPnP is enabled, whether the Xbox has a static IP address, and whether any port forwarding or DMZ is configured for the console. Finally, check how your modem is set up: if it also has Wi-Fi and is handing out its own private IP range, it’s likely doing its own NAT in front of your router. Putting it in bridge mode or using a DMZ for the router’s WAN IP is often the key step in getting from Strict or Moderate to Open NAT on Xbox.

NAT Type Strict on Xbox — quick troubleshooting tips

Fix Xbox Live party chat and multiplayer by opening NAT on your router.

Fast path: run the Xbox network test → remove Double NAT by using bridge mode or DMZ on your ISP router → enable UPnP on your main router → give your Xbox a static IP address → set up port forwarding for Xbox Live ports 3074, 88, 500, 3544, and 4500 → reboot the router and console, then re-run Test NAT type until it shows Open NAT. Avoid stacking multiple routers and prefer wired Ethernet for the most stable connection.

Disclaimer: This information is AI-generated and intended for general guidance only. For advice specific to your router model, Xbox console, and ISP, please consult a verified expert on Whizz-Tech before making decisions.

Getting Started Is Easy

Ask for help, 24/7

Members enjoy round-the-clock access to 12,000+ verified Experts for NAT Type Strict on Xbox, Double NAT detected, Xbox Live party chat issues, and more.

Expert will respond in minutes

We match you with a networking specialist who knows Xbox NAT types, port forwarding, UPnP, and router setup for all major brands (Netgear, TP-Link, ASUS, Linksys and more).

Save time & avoid frustration

Stop guessing at NAT Type Strict Xbox fixes and clicking through router menus blindly. Get a clear step-by-step Open NAT setup in chat and get back to gaming quickly.

FAQ

What does NAT Type Strict on Xbox actually mean?

NAT Type Strict on Xbox One or Xbox Series X|S means your console is heavily restricted by the router or modem. The ports that Xbox Live uses for multiplayer, matchmaking, and party chat are not fully open, so you may not be able to join some players, host games, or keep party chat stable. Fixing this usually involves enabling UPnP, removing Double NAT, and/or setting up port forwarding for your console.

How do I change NAT type from Strict to Open on Xbox?

To change from NAT Type Strict to Open NAT, first remove any Double NAT by putting your ISP modem/router into bridge mode or using DMZ. On your main router, enable UPnP, give your Xbox a static IP address, and then either rely on UPnP or set up port forwarding for the Xbox Live ports (such as 3074, 88, 500, 3544, 4500). After rebooting the router and console, run the NAT type test again until it shows Open.

What is Double NAT on Xbox and why is it bad?

Double NAT happens when you have two routers in a row — for example, an ISP modem/router combo and a second router like Netgear, TP-Link, or ASUS. Each device does its own firewall and NAT, so your Xbox ends up behind two layers of translation. This often causes NAT Type Strict or Moderate and blocks certain connections. Putting the ISP box into bridge mode or using a DMZ to your main router usually fixes Double NAT for Xbox.

Can my ISP prevent me from getting Open NAT on Xbox?

In some cases, yes. If your ISP uses CGNAT and doesn’t give you a dedicated public IPv4 address, it may be impossible to fully open ports to your Xbox, even with proper router settings. If you have followed all the steps (bridge mode, UPnP, port forwarding) and still can’t get beyond NAT Type Strict, contact your ISP and ask for a public IP address or gamer-friendly profile that supports Open NAT for Xbox Live.

Sources

Matt Verified Icon
Matt ● replies in < 1 min
Technician Expert
⭐⭐⭐⭐⭐ Trusted by 27,000+ customers
Avatar
Alex · Expert's Assistant
5 Tech Support Specialists are online right now.