What does a 'Web server is down' error code 521 signify?

Responsive Ad Header

Question

Grade: Education Subject: Support
What does a 'Web server is down' error code 521 signify?
Asked by:
56 Viewed 56 Answers

Answer (56)

Best Answer
(235)
A 'Web server is down' error code 521 means that the web server itself refused a connection from Cloudflare. This typically indicates that the origin web server is unavailable, either due to being offline, overloaded, or misconfigured.