Alex Last tested: October 22, 2026 · By Alex A 413 Request Entity Too Large error means the server refused the request because the body is bigger than it is configured to accept. You usually see it when uploading a theme, plugin, image, video, or backup file, or when an API sends a large JSON payload.
Last tested: October 22, 2026 · By Alex A 404 Not Found error means the server is reachable and understood the request, but it has nothing at that URL. The page may have been deleted or moved, the link may be wrong, or the server may not know how to route the URL to the
Last tested: October 22, 2026 · By Alex A 401 Unauthorized error means the server needs valid authentication for the resource you requested, and the request either did not include credentials or included credentials the server rejected. Despite the name, it is about authentication (who you are), not authorization (what you are allowed to do).
Last tested: October 22, 2026 · By Alex A 400 Bad Request error means the server received your request but refused to process it because something in the request itself is malformed, oversized, or invalid. The server is up. The problem is what the browser, app, or script sent. In practice, most 400 errors I
415 Unsupported Media Type means the server refused the request because the format of the request body is not supported. In most cases, the URL is correct and the server is reachable, but the body format, Content-Type, Content-Encoding, or upload type does not match what the endpoint expects. This is a request-format problem, not a
405 Method Not Allowed means the server understands the HTTP method, but the specific resource you requested does not allow that method. In simple terms, the URL exists, the server knows what GET, POST, PUT, or DELETE means, but that endpoint is not configured to accept the method you used. This is a configuration or
Error 1000 DNS Points to Prohibited IP means Cloudflare refused to serve the request because your DNS record points to an IP or routing setup Cloudflare does not allow. Cloudflare’s official documentation says this error indicates that a Cloudflare DNS record points to a prohibited IP and blocks access to the requested domain. This is
Error 1015 You Are Being Rate Limited means Cloudflare temporarily blocked access because too many requests were made in a short period. Cloudflare’s official documentation says this happens when the website owner has configured rate limiting rules that restrict how many requests a visitor can make in a given time period. :contentReference[oaicite:0]{index=0} This is not
Error 1033 Argo Tunnel Error means Cloudflare cannot find a healthy tunnel connector to receive traffic for the hostname. Cloudflare’s official documentation states that a 1033 error appears when the tunnel is not connected to Cloudflare’s network because Cloudflare cannot find a healthy cloudflared instance to receive the request. :contentReference[oaicite:0]{index=0} This is not a normal
NET::ERR_CERT_WEAK_SIGNATURE_ALGORITHM means the browser rejected the website certificate because it was signed with a cryptographic algorithm that is no longer considered secure. In practice, this usually points to legacy certificates that still rely on SHA-1 or similarly outdated signing methods that modern browsers distrust. :contentReference[oaicite:0]{index=0} This is not a cosmetic warning. It is a certificate