Error 8015190e issues

Last night I was in the middle of playing a game coop online when I randomly got kicked to offline. At the same time my pc got kicked to offline. I was having some connection issues before and after this problem started happening. Every other
wireless device works fine, but my xbox has not worked since last night when this error started popping up. I know there is another thread on this error, but the entire discussion is about getting a profile back.

In a few minutes I will try out our xbox slim which also connects wirelessly and see if it has any issues.

What Country/State/Province do you live in? Illinois, USA

Modem brand & model number: N/A

Router brand & model number: Verizon GT704WGB

If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter?: White external adapter

Things you have tried: Clearing cache 3 times, turning off router and xbox, connecting with other profiles, switch to wired connection, restore factory defaults on xbox

Is UPnP Enabled? Yes/no/Unknown: Yes

Do you have a NAT error? If so, what is your NAT type?: No

Any Error Codes you encounter: 8015190e

Who is your ISP(Internet Service Provider)?: Frontier

After you run "Test Xbox LIVE connection" press “Y” for "More Info”. In the pop-up that appears, what are the following values, if shown? (If a value below does not appear for you, just leave it blank.)

W: 0000-0021

X: 0000-F001

Y: 0000-0000

Z: 0000-0000

ID: 0004-0000

L: 8015-190E

Q: 8007-0435

T: Wireless

D: 192.168.1.67/74.40.74.40

S: WEP

C: 6

:)

 

keep getting kicked off live

same issues with error code 8015190e

 

360 XBL Trouble. One XBL fine.

If you're still having issues, try some of the solutions at this link:
support.xbox.com/.../error-code-8015190e

 

Update: Our second console (XBOX 360 Slim) also did not connect to the internet. It had the same error.

 

I *finally* solved it myself after a lot of work and multiple customer support chats. It had to do with port forwarding and DMZ hosting and UPnP. I had UPnP enabled before I port forwarded. After I port forwarded my console still wouldn't connect. Once
I disabled UPnP (restarting my router and xbox each time I made a change to be sure) my console worked. At one point I lowered my MTU value but I don't know if that did anything.