Solved

Dialup Internet Connection Problems

Posted on 2002-05-31
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Last Modified: 2011-04-14
I just recently upgraded to Windows XP, and am experiencing some weird and annoying problems connecting to the Internet.

It appears that the first time I connect to the Internet, everything works properly.  If disconnected by the other side and presented with the "Reconnect?" prompt, reconnecting works properly too.  However, after manually disconnecting, I can subsequently never again connect successfully without restarting the computer.

Specifically, the second and subsequent attempts *appear* to succeed, but my computer cannot contact any other computers, not even the DNS servers (it successfully pings its own dynamic IP address, however).

After restarting, IPCONFIG is completely blank.  During the first connection, it displays the following (the IP address is just one sample; my address is dynamic and changes each time):
  PPP adapter Internet:
    IP Address. . . . . . . . . : 203.173.216.173
    Subnet Mask . . . . . . . . : 255.255.255.255
    Default Gateway . . . . . . : 203.173.216.173

After disconnection, it displays the following:
  PPP adapter Internet:
    IP Address. . . . . . . . . : 0.0.0.0
    Subnet Mask . . . . . . . . : 0.0.0.0
    Default Gateway . . . . . . : 0.0.0.0

As you can see, the display is different from when the computer was first started.  After a second (or a subsequent) attempt to connect, it displays the following:
  PPP adapter Internet:
    IP Address. . . . . . . . . : 0.0.0.0
    Subnet Mask . . . . . . . . : 0.0.0.0
    Default Gateway . . . . . . : 0.0.0.0

  PPP adapter Internet:
    IP Address. . . . . . . . . : 203.173.216.162
    Subnet Mask . . . . . . . . : 255.255.255.255
    Default Gateway . . . . . . : 203.173.216.162

Again, the specific IP address is just an example.  But the major problem seems to be that the first entry hasn't gone away, and it's my guess that it's somehow interfering with the second connection.

HOW do I fix this?!?
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Question by:uecasm
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by:uecasm
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Just to clarify a little bit; when in the bottom situation, I can successfully ping 127.0.0.1 and 203.173.216.162 (my current IP), but NO other legitimate addresses, not even my ISP's DNS servers.
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by:stafi
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after disconecting manually go to prompt:

ipconfig /release
ipconfig /renew
ipconfig /all

is it still the same?





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by:wlennon
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You might also try either from the right side of the Box after going to Start, and see if your connection is there, if not, you can access it from the Control Panel, Network Connections, once there...right click on the connection and you will see a status box, the second tab is repair connection.

wlennon
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by:kjanx
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i see one problem with the dns numbers. the last number in the subnet mask should be 0
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by:uecasm
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stafi: Since the connection doesn't have DHCP, the first two commands simply respond with an error, and so the third doesn't display anything different.

wlennon: The connection has definitely gone away as far as the Windows GUI is concerned; I haven't seen that Repair Connection tab though, I'll have a look the next time it happens.

kjanx: To my knowledge I haven't fiddled with anything (and the connection is set to ask the ISP for such details), that's presumably what my ISP is sending.

Anyway, I don't know if it's an isolated case yet or not, but I fiddled with a couple more settings - specifically, turned off the Disconnect if Idle - and the connection went away (IPCONFIG empty) correctly after that.  Still needs a bit more testing, though, to see if that was just a fluke or if it's really happy now.
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by:uecasm
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I just got disconnected by the other side, it automatically reconnected, but it was broken again.  So it's still happening... (the last time it seemed to work was after explicitly clicking the Disconnect button, btw).

I checked in all four cases (when it was properly disconnected, when it was really connected, when it was brokenly disconnected, and brokenly reconnected) and could find no signs of a Repair Connection tab... can you explain a bit better where to find it?

Another bit of information; when I did "route print" after the disconnection it showed a WAN (PPP) interface in the list, which I'm pretty sure shouldn't have been there.  HOW do I tell XP to kill the interface, because it's obviously broken?!?
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by:t1n0m3n
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The /32 subnet mask is correct for a ppp connection.
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by:t1n0m3n
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could you do a "netstat -r" both before and after the second connection attempt and show the results here?
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by:uecasm
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netstat -r : Active and working connection

Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x40003 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0  203.173.207.216  203.173.207.216      1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
  203.109.252.117  255.255.255.255  203.173.207.216  203.173.207.216      1
  203.173.207.216  255.255.255.255        127.0.0.1       127.0.0.1       50
  203.173.207.255  255.255.255.255  203.173.207.216  203.173.207.216      50
        224.0.0.0        240.0.0.0  203.173.207.216  203.173.207.216      1
Default Gateway:   203.173.207.216
===========================================================================
Persistent Routes:
  None
 

netstat -r : Disconnected brokenly (0.0.0.0 IP addrs in IPCONFIG)

Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x40003 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0          0.0.0.0           40003       1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
  203.109.252.117  255.255.255.255  203.173.207.216           40003       1
        224.0.0.0        240.0.0.0        224.0.0.0           40003       1
===========================================================================
Persistent Routes:
  None

 
netstat -r : Second connection (doesn't work properly)

Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x40003 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
0x50003 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0  203.173.207.152  203.173.207.152      1
          0.0.0.0          0.0.0.0  203.173.207.152           40003       1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
  203.109.252.117  255.255.255.255  203.173.207.152  203.173.207.152      1
  203.109.252.117  255.255.255.255  203.173.207.216           40003       1
  203.173.207.152  255.255.255.255        127.0.0.1       127.0.0.1       50
  203.173.207.255  255.255.255.255  203.173.207.152  203.173.207.152      50
        224.0.0.0        240.0.0.0  203.173.207.152  203.173.207.152      50
        224.0.0.0        240.0.0.0        224.0.0.0           40003       1
Default Gateway:   203.173.207.152
===========================================================================
Persistent Routes:
  None
 
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by:uecasm
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As you can see, there's that "phantom" interface that doesn't die properly.  I'm positive that that is the problem, but I don't know how to get rid of the thing.

Incidentally it appears that what I originally posted seems to be incorrect (or maybe it changed its mind, I'm not sure).  But when I explicitly click the Disconnect button it disconnects properly, and if the connection is dropped by the other end (which happens frequently) it does the broken disconnect thing shown in the second netstat output above.
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by:uecasm
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Oh, and just for reference, here's the fourth state: just after rebooting or after manual disconnection.

Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
===========================================================================
Persistent Routes:
  None
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by:t1n0m3n
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What kind of modem are you using?

Beforehand get the correct (and most up to date) drivers for your modem.  Unzip them to an easily found place.
Delete all of your dialup shortcuts, then goto your device manager and delete your modem.
Reboot
When it discovers your modem, point it at the drivers directory.
Create your dialup connection again.
Connect and see if your problem persists
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by:uecasm
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I'm using a Rockwell-based 56k non-PNP ISA internal voice modem, on COM4.

I've already tried deleting and recreating the connection, and ditto for the modem drivers.  It hasn't helped.
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by:Asta Cu
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Have you been helped here or is more needed?  Since time has passed since your last comment, an update is appreciated (in case things have changed).  If you've been helped, convert the expert's comment to the Accepted Answer to grade and close it.  If more than one helped you, ask for a point split by posting a zero point question in the Community Support topic area, include this link and details with your request (expert name and point values to each).

This is the Community Support link:
http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt

Thanks,
":0)
Asta
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by:uecasm
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Neither.  As far as I know I still need help on this.

I say "as far as I know" because the problem is fairly intermittent and I keep trying different things to solve it myself.  It last occurred three days ago.
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by:Asta Cu
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Com1/Com3 share resources as is true for Com2/Com4

Have you tried disabling the onboard comport at the BIOS level to see if this helps?
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by:uecasm
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Happened again yesterday :(

Yes, I've tried that, it doesn't help.  I don't currently have anything else using those ports, so there shouldn't be any interference from there anyway.
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by:Asta Cu
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No fax program or the like?

Start-run-msinfo32 checking all details, no problems shown there on the various elements when expanded either?  No Problem devices under the hardware line, no conflicts shown there either?

Very baffling.  Have you tried completely rebuilding your connection to see if that helps?  I've had problems with a dsl line, different configuration (using router and PPPoE), with dynamic IP address in XP; and on occasion had to completely remove the network connections, IPL external modem, reset the router, etc. to fix these kinds of anomolies.

Listening further, perhaps others will have more ideas.

Asta
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by:Asta Cu
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I'm quite new to the XP realm, and learning as I go; but in troubleshooting my own issues found great information to help me isolate cause and learn in the process; here are some of the links.  Hopefully of some help to you as well.

http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q303265
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q305618
This behavior occurs if Windows XP is unable to detect the modem. Specifically, this occurs when you upgrade certain models of the HP Pavilion computer that are equipped with a modem based on the Rockwell chip set
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q315342

Resources for Troubleshooting Modem Problems in Windows XP (Q308022)
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q308022

Modem Settings Are Missing After You Remove and Re-Insert Your Modem (Q321036)
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q321036

COM Port Missing from List of Available Ports When You Try to Install a New Modem (Q283412) -->  I find it odd that the Modem uses 4 vs. 2; so suspect something else is using 2 and thus the intermittent problem.  Something appears to keep your com port open
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q283412
Dial-up Modem or PPPoE Option in New Connection Wizard Is Unavailable (Q320558)
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q320558






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by:uecasm
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Hmm, not sure what happened there, didn't get any email notification about those replies.

I've already run through the troubleshooters (several times), and rebuilt the connection (also several times), but no luck.  None of those other links you provided seemed very relevant.

I've recently added a network card to my computer; *maybe* it'll be slightly more stable now, with a few more networking components installed.

One idea that crossed my mind (if the simple presence of a network card doesn't do the trick) was to put the modem into my second computer (it's a peer-to-peer network) and connect that way (since I know that it works properly on that system).

Trouble is, the second computer is running Win98 (and will *NOT* be upgraded, ever) and the WinXP help on ICS seems to say that the Internet host computer has to be running WinXP or it won't work...
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by:uecasm
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Oh, and as for using COM4 rather than COM2, it's because I told it to.  As I said earlier, it's a non-PnP ISA modem, so has to be configured using jumpers.  It always worked properly on my Win98 system, and apart from those intermittent not-quite-closing-properly problems it works on WinXP.

Those intermittent problems are severely annoying, however, since they appear to require a reboot to resolve (as I've also already said).
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by:Asta Cu
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Com1 and Com3 share IRQs, as do Com2 and Com4.  At work, swamped, but will check back later and hope to have more time then.
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by:uecasm
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Yes, I know all about that, and as I said above I know that it is definitely not the problem.  I don't have anything plugged in to COM1 or COM2, so they can't be interfering with COM4.  Besides, if such interference was occuring, it would disrupt connection or communication -- but my problem occurs after disconnection ONLY.
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by:Asta Cu
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It sounds as though the disconnect request just doesn't actually "disconnect"; and that a reboot will actually ultimately really close the connection and allow you to reconnect.

Perhaps I've missed something, but would consider disabling onboard comm ports at the bios level and testing, if not already done.

Asta
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by:uecasm
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Disabling the BIOS ports didn't help, I already tried that.

And you're half right; the modem *did* actually hang up, and XP acknowledged that (connection status went to "disconnected", would happily try to reconnect later), but something in the underlying networking stuff was being left open; in particular, as you can see from all the NETSTAT posts I sent in above, an interface was being left open that was hogging the default route, and for some reason its priority level got *increased* after disconnection, which prevented a later connection from working properly.

Having said all that, I've now connected (and more importantly, disconnected) about 15-20 times since installing a network card, without further incident.  That's probably enough to tentatively declare this fixed -- though being an intermittent problem it could possibly still recur, so I'd like to leave this question open a little longer.

If it really is fixed now, though, that seems almost as strange as the original problem!  I've installed a network card, I've enabled ICS, but 99% of the time the card is not actually plugged into a network.  And yet it looks like (fingers crossed) that was sufficient to fix the problem.  That still seems quite peculiar to me...
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by:Asta Cu
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Fingers crossed with hopes.  It's always tougher to diagnose cause when you can't get hands-on, and go through a methodical process once again; though I'm sure you have.  A real baffler.
":0) Asta
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by:Asta Cu
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XP ICS - Internet Gateway
Windows XP's Internet Connection Sharing allows an ICS client computer to remotely monitor and control the ICS server computer's Internet connection. This Internet Gateway feature is available on computers running Windows 98, Windows 98 Second Edition, Windows Millennium Edition, or Windows XP that have been configured as an ICS client using XP's Network Setup Wizard. It isn't available if you've configured the clients manually.
 
http://www.practicallynetworked.com/sharing/xp_ics/internetgateway.htm
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by:uecasm
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I know what ICS is -- I enabled it because I do have another computer connected to my primary computer, which I mostly use for playing old games that refuse to run under XP or don't like my new video card.

Most of the time that other computer is off, and since it's a peer-to-peer link, that's why I said that 99% of the time my primary computer is not actually connected to a network.  But I wanted to be able to transfer files and do some downloading directly from the secondary computer, hence switching on ICS.

So the upshot is that I'm not really sure whether it was the network card or ICS that (hopefully) solved the problem... I'm more inclined to think it was the network card, however.  Given XP's NT ancestry, I'm willing to believe that XP just runs better with a network card installed.
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by:plenipote
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I have been following this problem for some time, as I was having the same problem.  About a week ago, I installed a network card on my computer, replacing the usb connection that the cable modem initially was using.  I have had no problems since then, and so whole-heartedly believe the problem was solved with the installation of the network card.  XP just doesn't like usb's very much, I guess.  Anyway, just wanted to let everyone know and hope this info helps someone, as this message string has helped me.  Good luck to all!
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by:uecasm
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Actually mine was an internal serial modem, not a USB one.  Still, from the sounds of it XP doesn't like operating modems without having a network card.  Yay :\
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by:Asta Cu
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":0)

To request special handling of this question by a Moderator, post a zero point question in the Community Support topic area with your request, and include this question link.

It should not be deleted, though, since both problems, recommendations and ultimate solution was posted and can help others.

Asta
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by:uecasm
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Just before I do that, though: plenipote, if you're still listening, were you using XP Home or Pro?

(I'm using Pro; I'm curious as to whether this bug is Pro-specific or occurs on both)
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by:Asta Cu
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I found this interesting, and aligns to many problems found as well in various user forums concerning WIndows XP Pro and Dial Up connection/modem problems.
Hundreds of modems are compatible with Windows XP. However, many difficult-to-detect connection problems are the result of incompatible modems. After upgrading to Windows XP, some users encounter problems with their analog modems. If you can’t connect to your ISP, or are frequently disconnected, or if your modem is not on the Hardware Compatibility List, check the links below for solutions.
http://www.microsoft.com/windowsxp/expertzone/focuson/analogmodem.asp

Listening as well for the response from plenipote on the version of OS.  It's been an interesting thread.

":0) Asta
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by:Browngasm
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I Have the very same problem and ive never found a way of resolving it
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by:joz
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Hello,

I face the same probelm: when first connecting to the Internet using my Typhoon Quick Com 56 PCI Modem on an older machine with WXP, it works really well. After about 10 minutes using the Web, it disconnects automatically and does not reconnect again. I tried to change several options both the hardware and software options. I found out, that if disabling modemerrorcontrol and modemcompression the computer connects again to the Internet but with a very poor quality and a slow speed (a lot of errors appear).
I tried to connect with a different modem on the same computer: same situation. I'm using a laptop pc on the same telephone line also with WXP and it connects without any problem in a very good quality.

Did anybody solve this problem yet?

Thanks in advance.

Joerg
Hello,

I face the same probelm: when first connecting to the Internet using my Typhoon Quick Com 56 PCI Modem on an older machine with WXP, it works really well. After about 10 minutes using the Web, it disconnects automatically and does not reconnect again. I tried to change several options both the hardware and software options. I found out, that if disabling modemerrorcontrol and modemcompression the computer connects again to the Internet but with a very poor quality and a slow speed (a lot of errors appear).
I tried to connect with a different modem on the same computer: same situation. I'm using a laptop pc on the same telephone line also with WXP and it connects without any problem in a very good quality.

Did anybody solve this problem yet?

Thanks in advance.

Joerg
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by:zoron887
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I have found this link - http://www.tek-tips.com/gviewthread.cfm/lev2/5/lev3/60/pid/594/qid/209103

it suggests that the problems are caused by a firewall software that are incompatible with windows Xp.

In my case the problems started with the upgrade to service pack 1.

Genady
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by:zoron887
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So, I reinstalled my tiny personal firewall 4.0
(and verified it is the latest version) and now the problem is gone !!!

Genady
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by:uecasm
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I was using ZoneAlarm (the free version), but the problem persisted even when it wasn't running.

But as I said earlier, as soon as I installed a network card the problem went away (and I didn't even need to connect it to a network).
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by:zoron887
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My problem was not related to whether the program was running or not (the first thing I did was to close the firewall app), but it was related to whether the program was installed or not.


Anyway, if it works for you for any reason, its ok.
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by:slateblu
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No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

- Answered by: asta
- Place in PAQ


Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
Thank you,
FYI POPUP ADS BYTE...
SB
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by:uecasm
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Obviously a canned message, as there has been recent activity ;)

Anyway, in point of fact, my original question was not answered by asta, but was resolved entirely by myself (a long time ago [September]!).

Asta has posted a number of interesting and possibly-relevant-to-other-people links, but didn't actually solve my particular problem :)

I don't really object to him getting some points, though, he's clearly spent a fair amount of time investigating this. :)
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modulo earned 0 total points
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Hi uecasm

As you did solve the question yourself, the 200 question points will be refunded, but you also indicate that the support of astaec was appreciated, I took the liberty to move 100 of those points to a "Points for aestec" question (see below). Making a kind of "virtual split".

http://www.experts-exchange.com/Operating_Systems/WinXP/Q_20492788.html

Hope you can agree, if not don't hesitate to add a comment !

modulo

Community Support Moderator
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