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360 mtu test keeps failing

360 says mtu failed how do i change routers mtu settings it used to work fine

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  • Anonymous Sep 29, 2008

    yea i have the same problem,but when i get 2 my router's main menu,i see no mtu settings or anything like that,i checked all of the routers settings and i can't find it, i own a belkin wireless 54g router. any help would be appreciated

  • Anonymous Sep 29, 2008

    Same problem here xbox 360 worked fine for two years. suddenly MTU faillure noe ( 29 september 2008 ) Live Poblem?


  • Anonymous Sep 29, 2008

    but i cant connect to that

  • roger771 Sep 29, 2008

    Same problem here. Have checked MTU on router & it is fine. I now suspect an XBL issue if we all have it?

  • dylanrchiles Sep 29, 2008

    i cannot connect to thehttp:// either, it shows page load error.

  • roger771 Sep 29, 2008

    Have now seen this:

    As we gear up to bring you the New Xbox Experience, Xbox LIVE and the Xbox LIVE page on will be down for 24 hours, beginning on September 29, 2008 from 12:01 AM PST until 11:59 PM PST. During this time you will not be able to access Xbox LIVE.

  • WOODS7927 Sep 29, 2008

    I have the same problem,but I have a D-Link(DI524) wireless router that is failing the MTU ON MY XBOX360. The default MTU is higher than the minium MTU THAT XBOX NEEDS, BUT STILL FAILING

  • Anonymous Sep 29, 2008

    Same thing

  • KOKs112 Sep 29, 2008

    now i dont know if its because the network for live is down right now or not but, my router worked great last night and now it doesnt work at all, the mtu test keeps failling and i dontr know why. anyubody have a clue????

  • trilobyt Sep 30, 2008

    Me also. Started after downloading most recent xbox update. Can't find ANY MTU settings on router and have never had problems before. Powercycling didn't work.

  • Anonymous Sep 30, 2008

    it is because live is down i have the same problem

  • ArenaBritt Sep 30, 2008

    I am having the same problem, but I am thinking it is because of the update they are doing. They sent an E-mail saying it was going to be down Monday the 29th...

  • Anonymous Sep 30, 2008

    how long will live be down

  • Anonymous Sep 30, 2008

    I'm having the same problem, the MTU test keeps failing. MY Xbox360 was working fine until about 1 day ago, possibly the start of the update. I've heard that Xbox live went back online, yet I'm still having the MTU failure.

  • niktwikoli Sep 30, 2008

    I thought it was just my evil bad luck playin up again but seems its not just me,am havin same problem with mtu failing but have still been getting maximum down & upload speeds through my pc....??it must have somethin to do with the update but i dont understand how or why its affectin the routers transmission..?please someobne enlighten me help fix it am gettin withdrawls lol thanks

  • ben-burgin Sep 30, 2008

    i have the same problem. i kno xbox live went down on the september 29th. but xbox said that it would b bac on the 30th. iv checked time zone an so on an as far as i kno xbox live should be bac on. but i cant connect my dashboard is tellin me i need 2 change my mtu settings. so i went 2 my router settings but i cant find anywhere 2 change my mtu settings? can any1 help me? iv already tried web adress aswel but i cant connect 2 it. is xbox live takin longer than it should in comin bac online? cos iv never had ths problem b4?

  • goose_rocks Sep 30, 2008

    same prob here...i tried that solution on the bottom but the http addy doesnt take me anywhere....whats up?

  • Anonymous Sep 30, 2008

    Same problem very frustrating.

  • Anonymous Sep 30, 2008

    i've been having the same problem too
    but i think its just the update.

  • pics1493 Oct 09, 2008

    Keeps failing when im trying to use Xbox LIVE.

  • Anonymous Nov 14, 2008

    yes, need to be set to the designated amount. need to know how to fix it.

  • sunsballa Nov 23, 2008

    when i type in "" it claims that the site doesnt exist

  • Anonymous Dec 07, 2008

    When i try to set up Xbox live using this router it says i do not have the minimum MTU

  • Anonymous Dec 14, 2008

    where can I find the MTU setting????????

  • Anonymous Dec 15, 2008

    The MTU setting keeps failing for xbox live connection test

  • Anonymous Dec 26, 2008

    trying to connect new ipods cant remember password to the wireless router

  • Anonymous Dec 28, 2008

    mi xbox say mtu failed how do I change the mtuof my router

  • Bigpajog Dec 31, 2008

    man m havin the same problem i typed in

    an that **** didnt work im lost an confused?!?!?

  • Anonymous Jan 06, 2009

    I cannot figure out how to set my MTU setting higher

  • Anonymous Jan 26, 2009

    how do u change MTU settings

  • Anonymous Jan 27, 2009

    i must of tried 20 times, but the password for the prompt won't accept admin as the password.

  • Anonymous Feb 11, 2009

    i have a 2wire gateway from at&t and idk wat to do i NEED help

  • Anonymous Apr 05, 2009

    360 mtu test keeps failing



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Using the main computer, open your Internet Explorer and on the Address Bar type

It will prompt your for username and password. By default leave it blank on username and type admin on the password

Under SETUP tab, you can see there MTU, set it to Manual and set the size to 1400 then click on SAVE SETTINGS at the bottom.

Now powercycle your devices. Turn off router first and then modem. Wait for 30sec. Turn on modem first, wait for lights to stop blinking then turn onrouter.

That's it..

Posted on Aug 08, 2008

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Well i did that but the thing is it does not do anything i put in the password admin but nothing happens at all just a error page

Posted on Oct 24, 2008


Whenever i type in my ip address it just says there are no search results found

Posted on Sep 30, 2008


Posted on Sep 29, 2008

Isn't XB Live offline today for updates? I wouldn't mess with any settings right now!

Posted on Sep 29, 2008

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Posted on Jan 02, 2017

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SOURCE: 360 mtu test keeps failing

Access the routers setup page by typing (ip address of the router) on the address bar on IE.

then on basic setup page at the bottom part of the page you will see MTU normally its on auto,
to change the value set it to manual. ask your isp what is their prefferred value for the mtu you can go as high as 1300 to 1500.

Posted on Sep 13, 2008

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Not enough mtu to go to xbox live at hotel

An MTU is the largest physical packet size, measure in Bytes that a network is capable of transmitting.. If messages are larger than the MTU they are divided into smaller packets before they can be sent. All networks have different MTU's which the owner of the network set at what they want to set it at. 576 is a very common MTU if you connect through PPP. 1500 is the most common MTU for Ethernet connections. The Xbox Live system requires your network to have a certain Maximum Transmission Unit (MTU). MTU values are important to the performance of online games. If this test fails, you can adjust the MTU setting on your network router or equivalent device to resolve the problem. Xbox live requires the network you use to have a maximum MTU. This is key to online gamesing. If the MTU fails then you have to adjust the router you are using. If you cannot access the router to adjust the MTU the you will not be able to play online games.

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This option is available via the web interface under the WAN Settings screen.

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Mtu failing

ther is no probs with ur xbox it will com on today

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ur xbox will be fine naw it was turned off by xbox for 24h on the 29 th

Sep 30, 2008 | Microsoft Xbox 360 Console

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MTU setting

Browse to the router's setup page, should be or and log into it. You just have to change the MTU. Put it to 1500.
Once logged in to the router, go to :

Basic Setup
Wireless Setup
Internet Connection Type
Connection Type = Static IP
Internet IP Address =
Subnet Mask =
Gateway =
Static DNS 1 =
Static DNS 2 =
Static DNS 3 =
STP = Enable
Optional Settings (required by some ISPs)
Router Name = client-mode
Host Name = 2WIRE383
Domain Name = [empty]
MTU = Auto
Please remember to rate all users who assist you for free :)

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1 Answer

360 mtu test keeps failing

Access the routers setup page by typing (ip address of the router) on the address bar on IE.

then on basic setup page at the bottom part of the page you will see MTU normally its on auto,
to change the value set it to manual. ask your isp what is their prefferred value for the mtu you can go as high as 1300 to 1500.

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Connection problems

MTU stands for "Maximum Transmission Connection". Some routers and/or network gateways are incompatible with Xbox LIVE, while others may be compatible but merely need to have a setting changed. If you compare your router to the list of routers at the following web address, you can confirm whether or not your hardware has been confirmed as compatible with Xbox LIVE by Microsoft:

Whether or not your hardware is listed as compatible, it would still be a good idea to check your instruction manual for the hardware you are using and see how (if possible) to change the MTU settings. Microsoft suggests that the MTU setting should be 1364. Using untested hardware or hardware not listed as compatible may still work, however, future updates to LIVE may suddenly make your hardware incompatible, as updates to LIVE and the Xbox console are made to work with the specifications of tested and listed compatible routers and gateways.

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Mtu test is failing

I've had the same problem and struggled with it for hours... If your on the Comcast network, there seems to be problems with adjusting MTU. I have a Dell 2350 router and that particular router cannot have MTU modified. Also, sometimes the MTU is effected by computers or phones in the house being on. One more suggestion, try a gaming router. Good ones start at 90 dollars, somewhat expencive but well worth it.

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Mtu failed

what kind of router are you using to connect your xbox 360 to? usually you can define the MTU size in the router configuration.. default for xbox 360 live is 1364 ... check out your web configuration on your router to see if you can change this!

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XBox 360 MTU Failed with Router

MTU of 1500 is the standard TCP/IP message length. Only MS Vista allows that to be changed dynamically. If your ISP uses 1500 then you need to use it too. Your Xbox protocol may be blocked by your ISP. You may want to give them a ring...

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