Intermittent, rare 403 errors from Cloudflare

[cloonan]

@shmax

Is it possible to trigger a 403 for some other reason than security reasons?

Cloudflare does not generate a 403 error, it’s something on your origin or between your origin and visitors to your site. Did you follow the 403 CommunityTip QuickFix ideas?

Community Tip - Fixing Error 403 Forbidden

Error Try the suggestions in this Community Tip to help you fix Error 403 Forbidden. Background A 403 Forbidden Error is a client side error that means that the client sent something the origin was unable to process. With the exception of requests that violate WAF rules or subdomains that are not covered by a certificate, Cloudflare does not generate any 4xx errors, so this would indicate something is not configured correctly with your hosting provider or your client is sending something inco…

@shmax

in my case the issue only happens very rarely (once every 3-4 days).

I am also unable to replicate the error, can you replicate the error @shmax? Are the visitors reporting the error all from the same country (quickfix idea 3). The next time you get a report, ask the visitor to try a different browswer (quickfix idea 2). And, can you share a screenshot (#6)

And, I’d also check the quickfix ideas for 526 error to make sure the orgin certificate is ok with your Full security setting. Does the value of your CNAME record called shmax.com load properly for you?