After installing Windows XP Service Pack 2, you may receive the following error message in the System Tray.
"This connection has limited or no connectivity. You might not be able to access the Internet or some network resources. "
to the problem are varied, however most of the solutions found on the
web just mask the problem by simply guiding the user through turning
off this notification. Now this solution may work great for systems
that are showing a false positive error, but what if the system
genuinely has lost its local area connection or the connection is
unstable, what then?
One possible answer involves a bug in Service Pack 2 of Windows XP
dealing with a loss of network connectivity for workstations that use
Microsoft’s L2TP-based virtual private networking (VPN) client to
connect to servers that are connected to NAT-based networks. However,
this bug seems to appear in situations that are not associated with
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 your firewall, rebuild the configuration in your
router, drop your connection speed from 100Mbps to 10Mbps, or assign
static IP addresses to your computers in the network to resolve this
How do I know if my system is affected by this bug?
you have installed Windows XP Service Pack 2 and are experiencing any
of the following symptoms, this bug is affecting your system.
- After installing Windows XP SP2, your network connection reports a problem with "Limited or No Connectivity"
- You have trouble connecting to the Internet or your local area network after installing Windows XP Service Pack 2.
- Your network connection gets stuck "Acquiring IP Address"
What Steps Can I Take to Fix This Problem?
you are receiving this error, you should run the Microsoft patch
(KB884020) for it. Follow the instructions below to do this.
Alternatively, you can download a zip file with the patch, registry file, and instructions
1) Download the patch
from Microsoft's site
2) Run the update to install it
Run this short Registry fix to complete the update. Type the following
lines in Notepad and save the file as FixReg.reg on your desktop, then
double click on it to install into your registry.
Windows Registry Editor Version 5.00
4) Reboot your computer
you experience the error message again, reboot your computer first. In
most cases this will solve many connectivity issues that are not
associated with this 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) Open Control Panel
2) Open Network Connections and Right Click on the Local Area Connection and click on Properties
3) Uncheck the following option on the General Tab
"Notify me when this connection has limited or no connectivity"
4) Click OK and close the Network Connections window
you are still experiencing this error message even after running the
patch shown above, you may be experiencing one of several problems
1) Your Network or DSL router may have bad or
missing information. Powercycle your router and/or rebuild the
configuration in your router.
2) Double-check your cabling to
the computer. Make sure you have the correct type of cabling,
straight-through CAT 5 or possibly a crossover cable and try another
cable or test the cable to make sure its working properly.
Check your network card to make sure its configured correctly and
working properly. Many times setting the network card to 10Mbps/Full
Duplex will solve this issue. To do this, open Control Panel, System,
Device Manager. Go to the properties of the Network card, click on the
Advanced tab and find the Link Speed and Duplex section. Change it from
Auto Detect to 10Mbps/Full Duplex.
4) Check and test your firewall. Your firewall, especially if its a software firewall like ZoneAlarm
Black Ice, Norton Firewall or something else could be blocking the
connection. Disable your firewall and test the connection. You may have
to resolve the problem by even uninstalling and reinstalling the
5) Check your IP address assignments and workgroup
settings in the computer for accuracy. Statically assign IPs to the
computers in your network.
6) Reset your TCP/IP stack by downloading and running WinsockXPFix.exe
a Visual Basic program designed to fix corrupted TCP/IP issues, host file problems and a variety of other connectivity issues.