The Domain Name System (DNS) is a service that connects domain names with their IP addresses. For example, when you enter www.tutosquad.com in your browser, the DNS helps you find the IP address of the website’s server.

DNS failure is a problem that prevents users from accessing websites or online services because of issues with the DNS. For example, you may see error messages like “DNS server not available” or “Server DNS Address could not be found” when you try to visit a website.

DNS failure can have different effects, such as:

• Websites not loading or loading incompletely
• Slow or unstable internet connection
• Some websites working but not others

There are many possible reasons for DNS failure, such as:

• Issues with your router or modem
• Issues with your browser or computer
• Issues with your ISP or DNS server
• Issues with your firewall or antivirus software
• Issues with your DNS settings or cache

Luckily, there are also many possible ways to fix DNS failure, such as:

• Restarting your router, modem, browser, computer, or device
• Changing to another browser or device
• Turning off your firewall or antivirus software temporarily
• Deleting your browser’s cache and cookies
• Checking and updating your DNS settings and records
• Changing to another DNS server, such as Google DNS or Cloudflare DNS
• Using a VPN to avoid DNS blocking or censorship

The exact way to fix DNS failure may depend on the cause and the situation. However, by following these steps, you can solve most DNS problems quickly and easily.

I hope this rewritten version of the article is helpful for you. If you need any further assistance, please let me know.