How long can a Cloudflare Error 521 last?

By: USER6184
23 Agustus 2025 Support 5 minutes
4.5
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Question

Grade: Education Subject: Support
How long can a Cloudflare Error 521 last?
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Best Answer
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The duration of a 521 error varies. It can be brief (a few seconds) if it's a temporary overload. However, if the underlying issue (e.g., server misconfiguration, persistent high traffic) isn't resolved, the error can persist for minutes, hours, or even longer.
Answered on 23 Agustus 2025

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