mon serveur DNS refuse de me connecter-Forum-Culture Informatique

My DNS server refusing to connect you to the internet can be incredibly frustrating! It’s a common issue that prevents your computer from translating website names (like https://www.google.com/search?…..google.com) into IP addresses it can understand. This means no internet access, even if your Wi-Fi or Ethernet connection seems fine.

Here are some common steps you can take to troubleshoot and hopefully resolve the problem:

1. Restart Your Router/Modem: This is the classic first step for a reason. Unplug your router and modem (if separate) from power for about 30 seconds, then plug them back in. Wait a few minutes for them to fully boot up and establish a connection.
2. Restart Your Device: Sometimes the issue is on your computer, phone, or tablet. A simple restart can clear temporary glitches.
    
3. Flush Your DNS Cache: Your device stores a cache of DNS lookups. Corrupted entries can cause problems.
    
    
   • On Windows: Open Command Prompt as an administrator and type
     ipconfig /flushdns

     then press Enter.

   • On Mac: Open Terminal and type
     sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

     then press Enter (you’ll need to enter your password).

4. Change Your DNS Server: You can manually set your DNS server to a public, reliable one like Google DNS or Cloudflare DNS.
   • Google DNS: Primary:
     8.8.8.8

     , Secondary:

     8.8.4.4
      
   • Cloudflare DNS: Primary:
     1.1.1.1

     , Secondary:

     1.0.0.1
      
   • You’ll find these settings in your network adapter properties (Windows) or Network Preferences (Mac).
5. Check Your Network Adapter Settings: Ensure your network adapter (Ethernet or Wi-Fi) is configured to obtain an IP address and DNS server automatically (DHCP), unless you’ve intentionally set static IPs.
6. Disable Firewall/Antivirus (Temporarily): Sometimes security software can interfere with DNS lookups. Try temporarily disabling your firewall or antivirus to see if that resolves the issue. Remember to re-enable it afterwards!
    
7. Try a Different Device: If possible, try connecting another device (e.g., phone, tablet) to the same network. If that device can connect, the issue is likely with your original device. If no device can connect, the problem is likely with your router/modem or your Internet Service Provider (ISP).
8. Contact Your ISP: If none of the above steps work, the problem might be with your Internet Service Provider’s DNS servers or their service in your area. Contact their technical support.

For anyone who needs to quickly record troubleshooting steps, communicate error messages, or even summarize conversations with tech support, a clear and accessible voice recording online tool can be incredibly handy. You can find a useful option at Online Tone Generator.