DNS stands for Domain Name System, which is the system that translates domain names into unique IP addresses that a browser can read. A DNS issue occurs when a browser cannot convert a domain name to an IP address, resulting in a failed connection. Some common causes of DNS issues include:

• Problems with the users internet or network connection
• Misconfigured DNS settings
• Outdated browser
• Temporary server outage
• Hardware or network issues
• Antivirus software

To fix a DNS issue, there are several troubleshooting steps that can be taken, such as restarting the computer or changing web browsers. Other solutions include checking the network or internet connection, updating DNS settings, and clearing the browser cache. If the issue persists, it may be necessary to contact the internet service provider or IT department for further assistance.