Error 525
Error 525 SSL Handshake Failed Error
What This Error Means
Error 525 indicates that the SSL handshake between Cloudflare and the origin web server failed. This means Cloudflare could not establish a secure connection to your server.
Common Causes
- The origin server does not have a valid SSL certificate.
- Cipher suites mismatch between Cloudflare and the origin.
- The origin server does not support SNI (Server Name Indication).
- Port 443 is closed on the origin server.
How to Fix It (For Users)
- 1 This is a server-side issue. You cannot fix it as a visitor.
- 2 Try accessing the site later.
For Site Owners / Developers
- Install a valid SSL certificate on your origin server.
- Ensure your server supports TLS 1.2 or 1.3.
- Check that port 443 is open and listening.
- Verify that SNI is enabled on your web server.
When It Is NOT Your Fault
If the hosting provider's SSL configuration is broken.
Check if this outage affects everyone globally
This error often indicates a wider problem. Use our tool to verify if the site is down for everyone.
Check Website Status →Recommended Tool to Prevent This Error
Fix DNS resolution issues and protect your site from DDoS attacks with Cloudflare.