Boris V.
Boris V.

@Vanya If you are getting an SSL certificate error, “unable to establish a secure connection” error, or “cannot connect to the real site” error for some HTTPS websites only, and you’re running Windows XP, and you get the problems on Chrome and IE browser, then you most likely don’t have XP Service Pack 3.

If the website uses SHA-256 SSL certificates, this wasn’t supported in XP until SP3. See http://support.microsoft.com/kb/322389

You will need to install SP3 to access these websites from Chrome and IE browser on WinXP.

The reason it works in Firefox is because Firefox has its own certificate verification library, but Chrome and IE use Windows for certificate verification.
So SHA-256 certificates will work in Firefox on any version of XP, but IE and Chrome will need XP SP3. The only way for Chrome on XP is upgrade to SP3.

If you are on a Windows XP computer, please make sure that you have updated your Windows root certificate, by following these steps (http://support.microsoft.com/kb/931125). After you have updated, check if the issue still occurs.

If you already have WinXP Service Pack 3 installed, you may also need to download and install the most recent Root Certificates update from Microsoft:


For “chrome” Follow these steps here (http://code.google.com/p/chromium/issues/detail?id=114709#c1) to get more details about the certificate information.


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