To fix the IPv4/IPv6 "No Internet Access" error, you can try the following steps:

  1. Restart Your Router and Modem:
    1. Turn off your router and modem, wait for about 30 seconds, and then turn them back on.
  2. Restart Your Computer:
    1. Sometimes a simple restart can resolve network issues.
  3. Update Network Adapter Drivers:
    1. Go to Device Manager (press Win + X and select Device Manager).
    2. Expand the "Network adapters" section.
    3. Right-click on your network adapter and select "Update driver".
    4. Choose "Search automatically for updated driver software".
  4. Reset TCP/IP Stack:
    1. Open Command Prompt as an administrator.
    2. Run the following commands one by one:
  5. Disable and Re-enable Network Adapter:
    1. Go to Device Manager.
    2. Right-click on your network adapter and select "Disable device".
    3. Wait a few seconds, then right-click again and select "Enable device".
  6. Check Network Adapter Settings:
    1. Go to Control Panel > Network and Sharing Center > Change adapter settings.
    2. Right-click on your network connection and select "Properties".
    3. Ensure that both "Internet Protocol Version 4 (TCP/IPv4)" and "Internet Protocol Version 6 (TCP/IPv6)" are checked.
  7. Assign a Static IP Address:
    1. Go to Control Panel > Network and Sharing Center > Change adapter settings.
    2. Right-click on your network connection and select "Properties".
    3. Select "Internet Protocol Version 4 (TCP/IPv4)" and click "Properties".
    4. Choose "Use the following IP address" and enter a static IP address, subnet mask, and default gateway.
  8. Disable IPv6:
    1. Sometimes disabling IPv6 can resolve connectivity issues.
    2. Go to Control Panel > Network and Sharing Center > Change adapter settings.
    3. Right-click on your network connection and select "Properties".
    4. Uncheck "Internet Protocol Version 6 (TCP/IPv6)" and click "OK".
  9. Check for Malware:

Run a full system scan using your antivirus software to ensure there are no malware infections affecting your network.

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