After installing WindowsÂ XP Service Pack 2, you may receive the following error message in theÂ System Tray.
“This connection has limited or no connectivity. You might not be able to access the Internet or some network resources. “
SolutionsÂ to the problem are varied, however most of the solutions found on the web just mask the problem by simply guiding the user throughÂ turning off this notification.Â Now this solution may work great for systems that are showing a false positive error, but what if theÂ system genuinelyÂ has lost itsÂ local area connectionÂ or the connection is unstable, what then?
One possible answer involves aÂ bugÂ inÂ Service Pack 2 of Windows XPÂ dealing with a loss of network connectivity for workstations that useÂ Microsoftâ€™s L2TP-based virtual private networking (VPN) clientÂ to connect to servers that are connected toÂ NAT-based networks.Â However, this bug seems to appear in situations that are not associated withÂ VPNs either.
If patching Windows XP for this bug does not fix the problem, read through the list below of other causes and fixes. You may have to reinstall yourÂ firewall, rebuild the configuration in your router, drop your connection speed fromÂ 100Mbps to 10Mbps,Â orÂ assign static IP addressesÂ to your computers in the network to resolve this issue.
How do I know if my system is affected by this bug?
If you have installedÂ Windows XP Service Pack 2Â and are experiencing any of the following symptoms, this bug is affecting your system.
Â·Â Â Â Â Â Â Â Â After installingÂ Windows XP SP2, your network connection reports a problem withÂ “Limited or No Connectivity”
Â·Â Â Â Â Â Â Â Â You have trouble connecting to theÂ InternetÂ orÂ your local area networkÂ after installing Windows XP Service Pack 2.
Â·Â Â Â Â Â Â Â Â Your network connection gets stuckÂ “Acquiring IP Address”
What Steps Can I Take to Fix This Problem?
If you are receiving this error, you should run theÂ Microsoft patch (KB884020)Â for it. Follow the instructions below to do this.
1)Â Download theÂ patch from Microsoft’s site
2)Â Run the update to install it
3)Â Run this short Registry fix to complete the update. Type the following lines inÂ NotepadÂ and save the file as “FixReg.reg”Â on your desktop, then double click on it to install into your registry.
Windows Registry Editor Version 5.00
4)Â RebootÂ your computer
If you experience the error message again,Â reboot your computer first.Â In most cases this will solve many connectivity issues that are not associated with thisÂ SP2 bug.
My Connection Works, Can I just disable the warning message?
If your local area connection is working properly and you simply want to disable the warning message follow these steps.
1.OpenÂ Control Panel
2.Â OpenÂ Network ConnectionsÂ andÂ Right Click on the Local Area ConnectionÂ and click on Properties
3.Uncheck the following option on theÂ General Tab
“Notify me when this connection has limited or no connectivity”
4.ClickÂ OKÂ and close theÂ Network Connections window.
What If Installing this Patch Doesn’t Help?
Other Causes For This Problem
If you are still experiencing this error message even after running the patch shown above, you may be experiencing one of several problems shown below:
1.YourÂ NetworkÂ orÂ DSL routerÂ may haveÂ badÂ orÂ missing information.Â Powercycle your router and/or rebuild the configuration in your router.
2.Double-checkÂ your cabling to the computer. Make sure you have theÂ correct type of cabling,Â straight-through CAT 5Â or possibly a crossover cable and try another cable or test the cable to make sure its working properly.
3.Check your network cardÂ to make sure its configured correctly and working properly. Many times setting the network card toÂ 10Mbps/Full DuplexÂ will solve this issue. To do this, openÂ Control Panel–>System–>Device Manager.Â Go to theÂ propertiesÂ of theÂ Network card, click on theÂ Advanced tabÂ and find theÂ Link SpeedÂ andDuplex section.Â Change it from Auto Detect toÂ 10Mbps/Full Duplex.
4.Â Check andÂ test yourÂ firewall. YourÂ firewall,Â especially if its aÂ software firewallÂ likeÂ ZoneAlarm,Â Black Ice, Norton FirewallÂ or something elseÂ could be blocking the connection.Â Disable your firewallÂ and test the connection. You may have to resolve the problem by even uninstalling andÂ reinstalling the firewall.
5.Check yourÂ IP address assignmentsÂ and workgroup settings in the computer for accuracy.Â Statically assign IPsÂ to the computers in your network.
I hope this will slove your Problem.