Are your SSL certificates SHA-256 and what is their compatibility?

Are your SSL certificates SHA-256 and what is their compatibility?

Certificates issued with the SHA-256 hashing algorithm have support on most modern operating systems. Some older systems only support hashing algorithm and as such, SSL certificates will show as invalid for these users.

As a general rule, SHA-256 is supported on OS X 10.5+ and Windows XP SP3+. For a detailed guide, please see below.

Operating System Support

Apple OS X 10.5+
iOS 3.0+
Android All Versions
ChromeOS All Versions
Windows XP SP3+
Windows Phone 7+
Blackberry 5.0+

Browser Support

Chrome 26+
Firefox 1.5+
Internet Explorer 6+
Opera 9.0+
Safari 3+
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