Firewalls and antivirus software can sometimes block DNS traffic, mistaking it for malicious activity. This interference can cause DNS resolution failures, resulting in the "DNS server not responding" error. Temporarily disabling these security programs can help determine whether they are the cause of the problem and make appropriate changes to your settings.
How security software can interfere
Firewalls: May block outgoing DNS requests or incoming responses.
Antivirus software: Can flag DNS traffic as suspicious and block it. Many antivirus applications do this by running their own "transparent" firewallproxy.
VPN and encrypted DNS
VPNs and secure DNS services redirect DNS requests through japan telegram data different servers.
This redirect may cause conflicts or increase resolution time.
VPNs provide alternative DNS paths if the main DNS servers are down.
Ensuring proper VPN and secure DNS settings can help resolve DNS issues.
VPNs can potentially cause conflicts with local DNS settings.
Many VPN services include an optional kill switch that blocks network requests in the event of a disconnection, increasing user security and privacy.
Steps you can take to fix the DNS server not responding error
Basic troubleshooting methods
Securing all physical network connections is a fundamental step in troubleshooting DNS errors. Start by checking that all Ethernet cables are securely connected to the appropriate ports on your modem, router, and computer. For wireless connections, make sure the device is within range of the router and there are no physical obstructions interfering with the signal.