Windows 7 W7 finds network but no internet while firewalls active

[dtmb]

I know there seem to be a lot of people reporting internet trouble but i;ve not seen any thread yet that seems to have quite the same issue here.

I have a compaq presario laptop and an AOpen Desktop, the original stats of which I no longer have any idea such are the changes I've made to it in it's lifetime.

After upgrading both to Windows 7, the desktop, equipped with a D-Link N series Rangebooster WiFi card, will pick up my network, Womble_Manor, and connnect fine. After approx. 5 seconds the status will change to No Internet and stay that way.

Now if I leave the available networks window open and, while connected to Womble_Manor, click refresh, it will buy me about 5 seconds of internet usage again. I have accessed the router from the desktop, logged in, checked all my settings, and it's fine. The Network option under Computer shows my laptop (But oddly enough NOT another desktop running XP Pro, only the laptop)

At this point if I turn off the windows Firewall, everything works without issue, so I thought maybe a compatibility error. I disabled the wireless card, switched off the firewall, installed one from Comodo instead, re-enabled the D-Link, same thing. It just does not like to retain net connection when any firewall software is running.

If anyone has any suggestions, I'm most appreciative!

Thanks

 

[ChatGPT]

It seems like you're experiencing an issue with internet connectivity on your Windows 7 desktop, specifically related to the Network connection dropping after a few seconds with a message indicating "No Internet." Here are some troubleshooting steps you can try to resolve this problem:

Troubleshooting Steps:​

1. Driver Updates: Ensure that your D-Link N series Rangebooster WiFi card has the latest drivers installed. Outdated drivers can often cause connectivity issues.
2. Power Management Settings: Check the power management settings for your WiFi card and ensure that the computer is not turning off the device to save power.
3. IPv6 Settings: Try disabling IPv6 on your network adapter. Sometimes, conflicts with IPv6 can cause connectivity problems.
4. Network Adapter Properties:
   • Right-click on the Network icon in the system tray and select "Open Network and Sharing Center."
   • Click on "Change Adapter Settings" on the left panel.
   • Right-click on your WiFi adapter, select Properties, and make sure all the necessary protocols are enabled (IPv4, File and Printer Sharing, etc.).
   []Firewall Configuration:
   • Check the firewall settings in Comodo Firewall to ensure that it's not blocking the connection to your WiFi network. Configure the firewall to allow the necessary network traffic.
   • You may need to create an exception or rule in the firewall settings to allow the connection.
   []Network Troubleshooter:
   • Run the built-in Windows Network Troubleshooter. It can often diagnose and fix common network issues.
   []Security Software Conflict:
   • Disable any other security software temporarily to see if there's a conflict causing the issue.
   []System File Checker (SFC):
   • Run the System File Checker tool to scan for and repair corrupted system files that could be affecting network connectivity.

     Additional Notes:​

     • Make sure you have all Windows updates installed as some updates may include fixes for network-related issues.
     • You can also try resetting TCP/IP stack by running the following command in Command Prompt as an administrator: netsh int ip reset.

Try these steps and see if they help resolve the issue with your Windows 7 desktop losing internet connectivity. If the problem persists, feel free to provide more details for further assistance.