net::ERR_CERT_AUTHORITY_INVALID Error. Vercel - Cloudflare Setup

Website, Application, Performance Getting Started
1

What is the name of the domain?

What is the error message?

NET::ERR_CERT_AUTHORITY_INVALID

What is the issue you’re encountering

NET::ERR_CERT_AUTHORITY_INVALID

What are the steps to reproduce the issue?

This error only occurs:

  • on work (NHS) computers
  • connected via ethernet / NHS Wifi
  • Microsoft Edge (no alternative browsers installed)

I can access the Vercel app directly via https://gas-cookbook.vercel.app without issue, but my main domain throws up the Cert error.

I’ve attempted all the steps here: cloudflare tutorial(community-tip-fixing-net-err-cert-authority-invalid/77958)

I would appreciate any help I can get. Thank you!

2

If that is that your site did you try this step

In this doc Community Tip - Fixing NET::ERR_CERT_AUTHORITY_INVALID

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