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Cisco Employee

Problem Accessing Hotmail

I've been encountering a strange problem with an ADSL connection .

The users are not able to log in to their Hotmail accounts.

The connection times out .

I cannot see any inbound connection dropped from the log , but I cannot excluded it .

How can we troubleshoot it ? is there any known issue ?


Re: Problem Accessing Hotmail

The topic of this forum is Optical Neworking however there are a number of professionals online who may be able to assist you. We are always considering additional forums for such topics and I will make a note of your post.

If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center or speak with a TAC engineer. You can open a TAC case online at

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

New Member

Re: Problem Accessing Hotmail

try lowering mtu settings to 1492. Alot of adsl routers sometime need this. WE have a sdsl customer at my work who had to do this to get to and hehe :P

SInce you did not say what kind of a router you are using i will also give you the info for changing in in the users machine as well.

1. You have to tweak the registry. Remember NTS has limited the MTU to 1454 while the PPPoE Maximum is 1492. Although this small increase will do you no good if you don't actually have an MTU greater or equal to 1454, it still widens your MTU's upper bound.

Go to Start/Run and type in "regedit" (no quotes), then click down through here:


Services/Class/Net/000n/Ndi/params/MaxFrameSize/"max" ....

(Where "n" is a number, and the registry directory for your Network Telesystems PPPoE Adapter (NTSP3) adapter). It's the one with the actual MaxFrameSize string (this is not the one you edit). Now the thing that you want to modify is the "max" string in that 000n directory. Change that to 1492. Now re-boot.


(To be sure that you put the settings in the correct places, go Here and down-load some pictures of the registry):


2. Ok, now that the upper limit on your MTU is good, it's time to set it. Go to:



Control Panel


Network Telesystems Enternet PPPoE Adapter (NTSP3)

Click on the advanced tab

Do you see that thing called "MaxFrameSize"? Change that to 1492.

Now re-boot.


For Win2K/XP users, this appears to be the proper place to set MTU:


MaxFrameSize = "1486"

- where n = the key containing this entry:

DriverDisc = "Efficient Networks..."

1486 appears to be the maximum MTU settings for Win2K/XP using Enternet software. See this thread for more details.

New Member

Re: Problem Accessing Hotmail

lower the mtu to 1492 for the router if not use dr tcpip for the machines. this fixes those things for dsl thanks!