Troubleshooting Network Connectivity Issues In Windows 10

Check Physical Connections:

• Verify that the network cable (if using wired connection) is properly plugged into both the computer and the network device (modem/router).
• Ensure that the wireless adapter (if using Wi-Fi) is enabled and properly connected to a known Wi-Fi network.
• Check for any visible damage to the network cable or adapter.

Run Network Troubleshooter:

• Press the Windows key + I to open Settings.
• Go to Network & Internet > Status.
• Click the “Troubleshoot network problems” link.
• Follow the on-screen instructions to diagnose and fix network connectivity issues.

Disable and Re-enable Network Adapter:

• Press the Windows key + R to open the Run dialog box.
• Type “ncpa.cpl” and press Enter to open Network Connections.
• Right-click on the network adapter you are using and select “Disable.”
• Wait a few seconds and then right-click again and select “Enable.”

Update Network Adapter Drivers:

• Press the Windows key + X and select “Device Manager.”
• Expand the “Network Adapters” section.
• Right-click on your network adapter and select “Update Driver.”
• Select “Search automatically for drivers.”

Reset TCP/IP Stack:

• Open Command Prompt with administrator privileges.
• Run the following commands one by one, pressing Enter after each:
  • “netsh int ip reset resetlog.txt”
  • “netsh winsock reset catalog”
• Restart your computer.

Renew IP Address:

• Open Command Prompt with administrator privileges.
• Run the following commands one by one, pressing Enter after each:
  • “ipconfig /release”
  • “ipconfig /renew”
• Check if your internet connection is restored.

Flush DNS Cache:

• Open Command Prompt with administrator privileges.
• Run the following command:
  • “ipconfig /flushdns”
• Check if your internet connection is restored.

Restart Network Services:

• Press the Windows key + R to open the Run dialog box.
• Type “services.msc” and press Enter to open Services.
• Find the following services:
  • DHCP Client
  • DNS Client
  • WLAN AutoConfig
  • Network List Service
• Right-click on each service and select “Restart.”

Try a Different DNS Server:

• Press the Windows key + R to open the Run dialog box.
• Type “ncpa.cpl” and press Enter to open Network Connections.
• Right-click on your network adapter and select “Properties.”
• Double-click “Internet Protocol Version 4 (TCP/IPv4).”
• Select “Use the following DNS server addresses” and enter the following DNS server addresses:
  • Preferred DNS server: 8.8.8.8
  • Alternate DNS server: 8.8.4.4
• Click “OK” to save changes.

Reinstall Network Adapter Drivers:

• Press the Windows key + X and select “Device Manager.”
• Expand the “Network Adapters” section.
• Right-click on your network adapter and select “Uninstall device.”
• Restart your computer.
• Windows will automatically reinstall the network adapter drivers.