SSL Protocol Error - Site Can't Provide a Secure Connection

[tallstac]

I'm having issues connecting to a site with the above error being thrown up. When using mobile data i have no issues, just when using VM.

I've spoken to the site owners and there are no blocks or issues being reported on the site. 

This has been happening since today only. I have read the below threads, but it seems this issue hasn't ever been resolved. Has anyone got a resolution for this? To be clear the site is nothing dodgy either.

https://community.virginmedia.com/t5/Networking-and-WiFi/SSL-Protocol-Error-Site-Can-t-Provide-a-Sec...

https://community.virginmedia.com/t5/Forum-Archive/SSL-Protocol-Error-Site-can-t-provide-a-secure-co...

[goslow]

Knowing the site name would allow people to test it for you.

[Sephiroth]

Might the target site suffered an expired SSL certificate?  Also what happens when you don't put the HTTPS:// into the URL?

Does this happen in a different browser?

[Client62]

Some ISP / mobile provider Parental Controls trigger these types of browser errors.

[用心棒]

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@tallstac wrote:

I'm having issues connecting to a site with the above error being thrown up. When using mobile data i have no issues, just when using VM.
⋮

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From a desktop or laptop device consider open a Command Prompt in Windows or a Terminal elsewhere and running the following commands where example.com is replaced with the site domain:

nslookup example.com

 and:

nslookup example.com 9.9.9.9

If the IP Addresses returned by nslookup are not the same, i.e. former returns 81.99.162.48 and latter something else, then review Essential Security settings, read more here How to stay safe online with Essential Security | Virgin Media Help

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[tallstac]

Thanks for the help!

i've asked whether the site has an expired SSL and they said no. It happens on every browser I've tried too and also when i don't put in the https://

[tallstac]

i doubt it makes any difference because i can access the site fine if i tether from my phone, so it's ISP related, not site related according to the website owners. 

[Sephiroth]

It might then be TLS version related.  There are better brainios than me on that side of things.