HTTP 413 Content Too Large vs 525 SSL Handshake Failed
HTTP 413 (Content Too Large) is a 4xx Client Error response, while 525 (SSL Handshake Failed) is a 5xx Server Error response. 413 indicates that the request payload exceeds the server's size limit. In contrast, 525 means that cloudflare-specific. SSL/TLS handshake with the origin server failed.
Description
The request payload exceeds the server's size limit.
When You See It
When uploading files that exceed the server's maximum upload size.
How to Fix
Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).
Description
Cloudflare-specific. SSL/TLS handshake with the origin server failed.
When You See It
When origin SSL certificate is expired, misconfigured, or incompatible.
How to Fix
Check origin SSL certificate validity. Ensure TLS version compatibility. Renew expired certificates.
Key Differences
413 is a 4xx Client Error response, while 525 is a 5xx Server Error response.
HTTP 413: The request payload exceeds the server's size limit.
HTTP 525: Cloudflare-specific. SSL/TLS handshake with the origin server failed.
You encounter 413 when when uploading files that exceed the server's maximum upload size.
You encounter 525 when when origin SSL certificate is expired, misconfigured, or incompatible.
When to Use Which
For 413 (Content Too Large): Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody). For 525 (SSL Handshake Failed): Check origin SSL certificate validity. Ensure TLS version compatibility. Renew expired certificates.