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Randomly loosing network after upgrading to SP2

1683 Views 6 Replies 2 Participants Last post by  gswilli
Ok Im going to start here since this problem started after upgrading to SP2.

I have a small home network, my main PC is running windows xp while my other is running win 98. With the upcoming release of a new game that will require SP2 I went ahead last night and updated. Everything seemed to go great no problems updating all smooth sailing.

Now the problem, it seems that after the update my winxp computer randomly just stops the network. When I say stop, i mean stop, not just the internet but I cant reach my router or my other comp and it also kills my router forcing me to reboot both the computer and router.

One thing i have noticed is when this problem occurs if I let the computer sit for a bit before restarting (ie a couple minutes) the internet sharing icon vanishes from the network properties window. I have never understood why I have internet sharing running, its actually disabled at the moment because I dont use the computer as a host for sharing thats why i have a router.

The network card is a Linksys LNE100TX with the latest drivers from Linksys. The router is a Lisksys BEFSR41 with the latest firmware.

So if anyone has any ideas or suggestions I would love the help

Thank you
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Hi gswilli

. . . and Welcome to the Tech Support Forums!

First of all, let's make sure that Internet Connection Sharing is disabled [you really don't want that enabled when you have a router].

Disabling Internet Connection Sharing on Windows XP
1) Click on the Start button, select Control Panel, select Network and Internet Connections, and choose Network Connections.
2) Perform the following actions on each connection icon, including all Local Area Connections and all dialup connections, in this window:
2a) Right click on the connection's icon and select Properties.
Select the Advanced tab.
2b) If there is a checked box for Internet Connection Sharing ("Allow other network users to connect through this computer's Internet connection"), uncheck it.
2c) Click OK.
3) Close the Network Connections window when all connections have had ICS disabled.

Disabling Internet Connection Sharing on Windows 98 Second Edition
1) Click on the Start button, click on Settings, and click on Control Panel.
2) Double click on Add/Remove Programs.
3) Select the Windows Setup tab
4) Select Internet Tools and click on Properties.
5) Uncheck Internet Connection Sharing if it is checked.
6) Click OK, and then click OK again.
7) Restart the computer.

Next, make sure to check that the following configurations
--- that are setup by default on a Windows XP Internet-Connection-Sharing computer. Change these to work best with your router's setup:
1) The LAN adapter that was configured to be the shared connection will have had IP address and a subnet mask of --- this is a problem with many routers, as is the default IP address of the router! Set the LAN adapter to use DHCP instead. It will use it's dynamically assigned private IP locally, and share the IP of the router during WAN access to the Internet (most broadband ISP's prefer their clients to use DHCP also, so the router's IP will be dynamic, too).
2) The "Autodial" feature is often enabled during ICS setup = you'll likely want to disable that, should the setting persist after the removal of ICS.
3) Ensure that the Internet Options for the browsers involved are not set up to use a proxy: it is perhaps easiest to simply set the LAN connection tab to "automatically detect". The WAN Internet connection provided by the router should be detected and used thereafter by the browser.

Visit Windows Update & Get the ~50 Critical Updates that have been released since SP2 appeared over a year ago.

Internet Safety, Firewall, and Windows XP Services
You'll always want a firewall running on any networked computers. Your hardware router's firewall does a good job of keeping attacks from the outside at bay, but little to help guard against stealth connections from malware that has successfully installed itself unawares. A strong software firewall will block, or alert you for a decision to deny or allow, outgoing connections that originate from your computer. The built-in Windows XP firewall does not block outgoing connections at all. That is way so many techs recommend running something stronger: most retail firewalls do well, and among the free-for-personal-use firewalls, several receive excellent reviews as well -- perhaps the best-known are ZoneAlarm & Sunbelt/Kerio Personal Firewall. Once ICS is disabled, you'll want to check on the configurations for all the software firewalls of the computers comprising your local network, as well as checking on the settings of the hardware firewall in the router. *Note* it is important to realize that it's OK to have the "Application Layer Gateway Service" (alg.exe) set to "Manual" and the "Windows Firewall/Internet Connection Sharing (ICS) Service" set to "Automatic" --- because third-party firewalls often make use of services provided by these Windows XP components. Having the service running does not mean that either the Windows Firewall or ICS is running [The Windows Firewall is turned off or on in the Security Center or Windows Firewall applet in the Control Panel, and ICS is enabled or disabled by the "Properties" of network adapters as described already (above)].

See if this gets things going OK -
. . . Gary
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Thank you for the info, it still seems I am having a problem.

I had already disabled ICS on the computer and went so far as to remove the program which I thought had solved the problem. I dont use my router as a DHCP server, I have configued each computer with a static IP so i can forward ports to the XP computer for certain online games.

Its not forcing me to reboot the router now when the network fails on the XP computer and I found if I go into network connections and disable the loca area connection then enable it again the network will start working.

I have picked up 66 updates since I upgraded to SP2 so I should have them all. Someone said this was a known issue with SP2 and a static IP but I have found no info on this.

Any more ideas would be most welcome since im starting to pull out my hair and I dont have much left to pull out :grin:

Thank you
Hi again

This is one of the times where it would help if I was a bit more familiar with online gaming . . .

I wonder if something odd like a master-browser election is complicating things. Is the XP machine set to be a master-browser? I imagine if the XP PC is set to be the Master-Browser, and then a condition occurs that causes it to stop it's Computer-Browser Service & force an election - that would disrupt the network pretty well, and it also seems that this would explain why your workaround (disable/re-enable the connection) works. [If I remember right, an election can stall a network for up to 12 minutes].

To see if this is the case, with , look in the EventViewer for errors that shoud be logged at the same times that you are losing traffic throughput on the network. [If you haven't used EventViewer much, it's in Administrative Tools, and to view an event's details, right-click it and select "Properties"]. If nothing else, the errors might turn up some useful information to figure troubleshooting ideas.

I suppose you could re-check the configuration details for each networked connection one more time - on each computer: to make sure that the router's IP isn't accidentally able to fall within the range of forwarded IPs or static IPs assigned on the LAN. That's not likely, but certainly would cause trouble.

... and perhaps a gaming-network guru will bail us out!
. . . Gary
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Hi again Gary,

Picked up some more info this morning after posting my last report. First Im not sure what you mean by master browser.

When I say i use the xp computer for online games im not doing anything special with it outside of forwarding portsfrom the router for certain game traffic. I just dont use that computer to browse the web much, it keeps the risk down for malware that way. When I downloaded the updates I was having the network problem as well. Something else that I forgot to mention is one of the games I play uses a bit torret system for patches and if I enable peer to peer for that alot of the time I will get BSD with a ndis.sys error if that helps with anything.

Now the other info, this morning when I posted again I had just experinced a network shutdown on the xp comp, disabled the local lan enabled again and as the time of this post it has been running for over 15 hours without a hitch. I normally shut my comp off of a night or when im not home but leave it running when im around so Ill update this again if it does the same thing tomorrow after a shutdown.

The IP assigned to the xp comp is with a subnet of and my router ip as the gateway and DNS maybe I have some numbers set up wrong.

Thanks for all your help and if that rings any bells let me know and if maybe its fixed now ill post a reply

Thanks again
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Hi again

. . . I've got my fingers crossed!

The Computer Browser Service/Master Browser situation is something you only have to worry about on networks with mixed 2K/XP/2003 & 9x systems (because the older NetBios is built into the Win9x versions of Windows). Hopefully you won't have to read up on it at all, but if you are curious, here is an article over at Microsoft's TechNet about it ---

Can I guess that the system that receives the "ndis" error is a Windows 9x computer? That file is a part of the Windows Networking components. If you see the BSOD involving that - we can take a look at it & see what might be up.

I'm hoping that the removal of the ICS configurations will also have solved the ndis error as well.

Best of luck
. . . Gary
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It seems I might have the problem fixed or at least a valid work around. When I booted this morning I went ahead and disabled then enabled the local area connection first thing and its been fine all day.

As far as the BSOD's i have no clue if those are fixed yet or not. The only time i have the problem is when I patch World of Warcraft using their peer to peer torret system and since the last patch I have found newer drivers for my card so that problem may be cleared up as well.

I want to thank you for all your help with this and if I ever encounter other problems Ill make sure and come back to here.

Thanks again
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