Firstly, DNS refers to the “Domain Name System.” Seven ways to Troubleshoot DNS issues related to Resolution are:
Domain names are converted into IP addresses using DNS. It’s a critical part of how we access the Internet, and it’s something you should be aware of if you’re having problems with your connection or website.
This ValidEdge article lists (https://validedge.com/dns-address-could-not-be-found/) methods for resolving the DNS address not found error.
Common DNS issues include:
DNS resolution failure: When you try to visit a site on the Internet, your computer cannot translate its domain name into an IP address. In this case, you may see “website cannot be reached” or other similar errors.
DNS query timeouts – When this happens on your device or computer, it takes too long for your device to receive an answer from its DNS server (the one provided by your ISP). This could happen due to congestion on their end as well as other factors such as poor connectivity between them and different servers throughout the world; however, if this persists after troubleshooting steps have been taken, then there might be another issue at hand, such as malware infections which would need further investigation before determining root cause.
Check the DNS Server Configuration
DNS servers are configured in a network adapter’s TCP/IP Properties. To view these settings, open a command prompt and type ipconfig/all.
The output will show you which network adapter you’re using. Make sure that this is the same as what’s listed on your router’s configuration page–if it isn’t, then you’ll need to change them both so they match up correctly.
Check the DNS Cache
If you’re having trouble resolving DNS servers, your computer’s DNS cache is the first place to check. You may accomplish this by launching a command prompt and entering ipconfig.
If any of your entries are incorrect or missing, it will tell you so and give you instructions on fixing them.
Check the Hosts File
The host’s file is a text file that maps hostnames to IP addresses. It’s located in the /etc/ directory and can be edited with any text editor. If you’re using MacOS or Linux, you’ll need to use nano /etc/hosts (or vi /etc/hosts, depending on your preference).
If you find that some of your DNS queries are failing due to an incorrect entry in this file, remove it by entering rm /etc/hosts at the command line prompt.
Check the Firewall Settings
If you’re having trouble resolving DNS requests, your firewall settings may prevent the DNS server from responding.
Check if DNS requests are allowed:
Using the Advanced Security MMC snap-in, launch the Windows Firewall (run as administrator).
- Click Inbound Rules and then click New Rule… to create a new rule.
- Select Predefined under Scope and Protocols, then click Next.
- Select Customize under Action, then click Next.
Under Name and Description, type in a name for your rule (for example: Allow All Traffic). Then select all three checkboxes under Configure These Settings For This Rule: “Allow connections,” “Allow matching connections based on their source ports,” and “Allow matching connections based on their destination ports.” Click Finish to complete creating this rule!
Check the Internet Connection
The internet connection should be examined first. If you have a stable relationship, there should be no problem with DNS resolution. If your router has been restarted recently, try rebooting it again and see if that helps resolve the issue.
If you’re still having trouble resolving DNS names after checking these things, move on to our next troubleshooting step:
Use a Different DNS Server
Your DNS server may have been blocked if you’ve tried the above steps and still can’t connect to your website. If this is the case, try using Google DNS or Cloudflare DNS as an alternative. It may not work for everyone, but it’s worth a shot!
Use a DNS troubleshooting tool.
Try ns lookup, dig, and traceroute
If you’re having trouble accessing websites or using other Internet services, one of the first things to do is run some basic DNS tests to see if there’s an issue with your computer’s connection to the Internet. These tools can help diagnose problems with your network configuration, including DNS settings:
nslookup (Windows) – This command-line tool allows you to query name servers for domain information and IP addresses. It also provides basic statistics about each query response that may be helpful when troubleshooting connectivity issues and latency problems with specific domains or hosts on the Internet.