Vercel site net::ERR_CERT_AUTHORITY_INVALID error on corporate networks

(edited)

Hello,

Our Vercel site is producing net::ERR_CERT_AUTHORITY_INVALID for some users, who appear to have something like Corporate Defender (Fortinet).

I checked against https://www.ipqualityscore.com and it states:

Fraud Score: 100
Connection: VPN

The domain is https://nono.sh

Error:

net::ERR_CERT_AUTHORITY_INVALID

The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for bonus points.

https://vercel.com/docs/projects/domains/troubleshooting

You can also use v0 to narrow down the possibilities.

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