Error when visit https website from Windows XP

[t2hol]

Hi

Because SamSung did not update driver for newer Windows OS so I still using Windows XP in my office. However, there is some problems.

Few days ago I installed Let's Encrypt SSL for my blog at https://www.topwebhosting.tech and I always get error when visit from Windows XP, it saids "Your connection is not secure"

I get same error when visit gmail.com but can access mail.google.com

I don't known why and how to fix this issues ?

I tried to update my Windows XP, search around to find the solution but still can't access many https site from my office

Thanks

[Geek-9pm]

Which version of Windows XP?
Here is some recent information about your problem.
http://www.altn.com/Company/PressRoom/2015-01-12-SSL-Update-Notice/
Read carefully to see if it might work for you.

[t2hol]

I am using latest Windows XP service pack 3.

I've checked the link above and the security update from MS is for "Security Update for Windows Server 2003" - https://www.microsoft.com/en-us/download/details.aspx?id=40973

Will it works on Windows XP ?

Regards,

[camerongray]

Letsencrypt is very new and is therefore not perfectly supported by XP.   They have information on a workaround here however this would need to be performed on every client machine running XP, it's not something you can do server-side: https://community.letsencrypt.org/t/which-browsers-and-operating-systems-support-lets-encrypt/4394