Hi, I have been using CF for a while now but on a new site that I set up, I am receiving 521 errors repeatedly on pages. As soon as I refresh the page, however, it works. Whenever I click on a menu item, it gives a 521. I refresh it and it works, but as soon as I click another link, I get a 521. I…

Check If Cloudflare IPs are blocked and ask your host If there are any rate limits configured. More troubleshooting tips: [image] Community Tip - Fixing Error 521: Web server is down Tutorial Error Try the suggestions in this Community Tip to help you fix Error 521 : We…

Error 521 but works when CF is disabled

Website, Application, Performance DNS & Network

MarkMeyer November 20, 2018, 6:58pm 2

Check If Cloudflare IPs are blocked and ask your host If there are any rate limits configured.

More troubleshooting tips:

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Error 521 but works when CF is disabled

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