Website error guide
Is your website showing an error? Find it below: we explain in plain words what it means, what caused it and how to fix it step by step. Right next to it is a tool to check your own site instantly.
SSL and HTTPS
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ERR_CERT_DATE_INVALIDERR_CERT_DATE_INVALID error -
ERR_CERT_AUTHORITY_INVALIDERR_CERT_AUTHORITY_INVALID error -
ERR_CERT_COMMON_NAME_INVALIDERR_CERT_COMMON_NAME_INVALID error -
ERR_SSL_PROTOCOL_ERRORERR_SSL_PROTOCOL_ERROR error -
NET::ERR_CERT_REVOKEDNET::ERR_CERT_REVOKED error -
Mixed ContentMixed content warning -
ERR_SSL_VERSION_OR_CIPHER_MISMATCHERR_SSL_VERSION_OR_CIPHER_MISMATCH error -
Cloudflare Error 526: Invalid SSL certificateCloudflare Error 526: Invalid SSL certificate -
CAA record prevents certificate issuanceCAA record prevents certificate issuance -
HSTS preload submission rejectedHSTS preload submission rejected -
SSL_ERROR_RX_RECORD_TOO_LONGSSL_ERROR_RX_RECORD_TOO_LONG error in Firefox
Server errors (HTTP)
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403 Forbidden403 Forbidden: Access to This Page Is Denied -
404 Not Found404 Error: The Page Could Not Be Found -
500 Internal Server Error500 Internal Server Error: Something Broke on the Server -
502 Bad Gateway502 Bad Gateway: The Server Got a Bad Response -
503 Service Unavailable503 Service Unavailable: The Site Is Temporarily Down -
504 Gateway Timeout504 Gateway Timeout: The Server Waited Too Long -
508 Resource Limit Is Reached508 Resource Limit Is Reached: Account Limits Hit -
HTTP 400 Bad RequestHTTP 400 Bad Request Error -
HTTP 429 Too Many Requests429 Too Many Requests error -
WordPress White Screen of DeathWordPress White Screen of Death (WSOD) -
The REST API encountered an errorThe REST API encountered an error -
Refused to display in a frame (X-Frame-Options)Refused to display in a frame (X-Frame-Options)
DNS and domain
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DNS_PROBE_FINISHED_NXDOMAINDNS_PROBE_FINISHED_NXDOMAIN error -
ERR_NAME_NOT_RESOLVEDERR_NAME_NOT_RESOLVED error -
DNS_PROBE_FINISHED_NO_INTERNETDNS_PROBE_FINISHED_NO_INTERNET error -
This site can't be reachedThis site can't be reached -
Домен не резолвиться після зміни NSDomain not resolving after an NS change or migration -
Неправильна A-запис DNSWrong A record, or www not working -
DNS server not respondingDNS server not responding -
Subdomain not resolvingSubdomain not resolving -
clientHold (domain suspended)clientHold: domain suspended -
Cloudflare Error 1016: Origin DNS errorCloudflare Error 1016: Origin DNS error -
DNS_PROBE_FINISHED_BAD_CONFIGDNS_PROBE_FINISHED_BAD_CONFIG error -
www version of the site does not workThe www version of the site does not work
Email and spam
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550 SPF check failedThe 550 SPF check failed error -
Листи потрапляють у спамEmails going to spam -
DMARC policy reject (p=reject)DMARC reject: message blocked by policy -
550 5.7.1 Message rejectedThe 550 5.7.1 rejected error -
DKIM signature verification failedDKIM fail: signature does not verify -
No MX record foundMissing MX record -
SPF PermError: too many DNS lookupsSPF PermError: too many DNS lookups -
550 5.7.25 Reverse DNS PTR failure550 5.7.25: reverse DNS (PTR) validation failed