Well-known/pki-validation/fileauth.txt returns 404

General
1

I have a site hosted using Microsoft Azure Static Web Apps that is proxied through Cloudflare.

I have an issue connecting to any file in the /.well-known/ directory.

When using the default hostname xyz.azurestaticapps.net/.well-known/pki-validation/fileauth.txt I get a successful response.

If I try and do it through the Cloudflare proxied domain I get a 404. Interestingly, if I add a worker that just does fetch(request) - I get a success response.

Are /.well-known/ routes blocked by Cloudflare? If not how do I go about debugging why the proxied version returns 404, is there anyway to log the exact request made by Cloudflare?

2
3

The file exists and is reachable directly on it’s default domain and if I add a generic worker on that route.

How do I see what is the default proxy doing differently that only it gets a 404?

4

Well, what’s the domain giving the 404 error?

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