Read More: What Is a DNS Server and Why Is It Unavailable? Blocks and FirewallsĪre you behind a firewall? Depending on the firewall settings, communication between servers can be disrupted and, in some cases, certain websites with security plugins can also block out your local IP address. This delay can also generate the 502 Bad Gateway error message. If the DNS records are misconfigured at the hosting level, the domain name will not resolve to the IP address causing this error to pop up.Īlso, keep in mind that most DNS changes take time to propagate and DNS changes have to abide by the TTL (Time To Live) threshold before being implemented. DNS IssuesĭNS issues are a major underlying reason behind this error. A range of connectivity issues, a server that is powered down, or spikes in traffic can all lead to this message. This 502 error code is a by-product of a source or origin server being out of order.
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