New ISP with XR500, Xbox Double NAT Strict.

What is the Mfr and model # of the ISP modem? Built in router here by chance? If so...

Couple of options,
1. Configure the modem for transparent bridge mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios and firwall and uPnP on the modem, configure the modems DMZ for the IP address the XR router gets from the modem.

 Then:

You only need uPnP enabled on the XR router. Don't use any Port triggers or the DMZ on the XR router, just set up IP address reservations for each console. Set NAT Filter to OPEN for two or more consoles on the same router.

I would probably do a factory reset and set up the XR router again from scratch.

Also do this on each console to clear out any caches:

Press the power button on the front of the console until it turns off. Once you have the router set up again, turn the 1st console back on and check NAT status on the dashboard, then in a game. Should be OPEN here. Turn on the next console and so same. Should be OPEN here too if you have configured the router right.

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Xboxlivegamer wrote:

Sorry for taking a long time to reply.

I no longer have double NAT, however it says "UPnP is not successful" on my xbox one x, UPnP is set to on in my router's settings.

My NAT is Moderate.

I also tried your port triggering settings and there was no change.

 

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