Net:: err_cert_authority_invalid

My domain is:

I have a valid certificate but I am getting this error with some ISP's / Networks / Browsers:


Can anyone help?

Your website looks fine to me.

You ended up in some kind of blocklist, though, so sometimes you will get a SSL_ERROR_BAD_CERT_DOMAIN because you get redirected and their server doesn't have a valid cert for your domain.

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Thank you for getting back to me! Any advice on the best way to tackle this?

Just email all ISP's and get them to check? I tried this with Vodafone and they are saying there is malware on the site, which there isn't, although there was in 2020 which I think is how we ended up on the blocklist. can I ask how you could tell we were on a blocklist?

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I'm a Vodafone customer, it was blocked for me. I had to use a VPN.

Yes, you should complain to them. According to Google, you're clean: Google Transparency Report


Thank you so much for your help @9peppe


@9peppe Hi There, would you be able to tell me if you can access the website through Vodafone today please?

Nope. Can't access it from Vodafone Italy.

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OK Thanks

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