Can connect to internet but not xbox live

So last night I turned on my xbox 360 to play some games and immediatly noticed that it was taking a long time to load and when it did i wasnt connected to the internet, so i tried to sign in and got a 80151911 and tested my connection. it forever
on the xbox live step and said i was connected to the internet but couldnt connect to xbox live and that my modem was the issue. So i hard reset my xbox and nothing, naturally i hard reset my modem and router too and still nothing changed. I decided to check
my roomates xbox 360 and it was connecting just fine so at this point ive determined that my xbox wireless is working but not connecting to the servers which are still up and working on my internet service. i even talked to the xbox support for about an hour
last night and about 3 hours today and they didnt help other than leading me to the traceroute which says it timed out one step before the end

What Country/State/Province do you live in? Oregon

Modem brand & model number: UBEE and i think the model number is: DDM3510

Router brand & model number:Cisco EA3500

How many consoles do you have connected to this router?

Wired or wireless (for each console): 2

If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter?No

Things you have tried: hard reset of xbox, modem, and router; and about 4 hours of troubleshooting from xbox support before being referred here

Is UPnP Enabled? Yes/no/Unknown Uknown

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

Any Error Codes you encounter: 80151911 when i try to sign in to my account

Who is your ISP(Internet Service Provider)? Comcast

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: 000 - F001

Y: 00A8 - 4820

Z: 0000 - 0000

ID: FFFF - FFFF

L: 8015 - 1911

Q: 8007 - 0435

T: Wireless

D: 192.168.1.1, 0.0.0.0

S: WPA2

C: 6

:)

 

can not connect to xbox live but can connect to internet

Check out the troubleshooting in the article below. I hope it helps.

support.xbox.com/.../connect-xbox-live

 

Can connect to internet but not Xbox Live?

Hey there, vande749! This thread is over a year old. If you could, please post up a new thread detailing what you're running into, your router and modem information, error codes you may be receiving, and troubleshooting you've completed. This way we can
get you the individual support that works best on the forums.

 

I would like to break the code apart with you and see if you can get your profile working:

8015 in your code means your account has something missing/unverified in the security and needs to be fixed

Go to account.live.com/proofs (if possible use a PC and Internet Explorer as the Microsoft security pages don't always work with other browsers/devices)

Login with your account (login email and password) and verify access if your PC is not yet trusted

Check 3 things on the Protect Your Account page

1. Make sure you either have Two Step Verification OFF

OR set up TSV correctly with a smartphone ID app (and that you are using the ID app passcode instead of the password)

2. Make sure you have two verified security options (email and/or phone number) other than your login email address (your login email will not count for the 2 verified security options)

3. Set up the 25 character recovery code (this code causes a back end change so the system knows you have updated the security) Also keep the code somewhere safe since it can be used to reset the password and wipe all account security options (replacing
them instantly and not having to wait 30 days for the update)

Then check "recent activity" listed on the left and see if your recent attempts show a really weird location (like the IP is in another state or country)

If it looks really odd but it was you; see if you have the option to agree that the activity was your activity

Next go to account.xbox.com (or sign in on www.xbox.com and click My Account)

Click Manage Devices on the My Account page

select See Xbox 360 Profile Protection

If you have more than one console showing as having your password saved (and you do not have more than one 360 in use) hit the green "require profile download" button

---

Now the ####19## part of the code.

There is something NOT being trusted about your network with regards to the console/account connecting to Live

The best way to deal with this is to restore your network stetting on the console to defaults (if you use manual settings record them somewhere)

-to restore to factory defaults go to settings>network settings>select your network>configure network>additional settings>restore to factory defaults

Once the network settings are restored, turn off the console (if you use Ethernet disconnect it); go to your modem and router. After you unplug the power from both, locate the little button on the modem that resets its entire connection to your ISP (normally
a little button on the back or bottom that can only be pressed with a pin)

Let the modem and router fully power cycle for 5-10 minutes

When the modem and router are back on if you have Ethernet Reconnect it

Then turn on the console

When the console is back on either test your wired connection or reset up and test your wireless connection

If the test passes and shows connected to Live head to the next step (otherwise you will need further networking assistance)

Now that the console connects to Live:

Delete the following system item files if you have them: Rights Database, Marketplace System data, Content Cache and Product Improvement Data

-to get to your system items: Settings>system settings>storage>primary storage device>system items

Clear the system cache 3 times (
support.xbox.com/.../clear-system-cache )

Now re-download your profile

*if the profile is not corrupted this will simply refresh the profile and help the console see all the security updates. If the profile is corrupted then the profile will fail to download and seem to vanish from the console's sign in options. If this happens
go to settings>system settings>storage>primary storage device>profiles>locate the corrupted profile file (if still present) and then Delete Profile ONLY do NOT delete profile and items unless you want to lose your game saves

Download profile

support.xbox.com/.../download-your-xbox-live-profile-to-another-360-console