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Internet browser compatibility guidelines

Browser TLS 1.2 Compatibility Notes
Microsoft Edge Compatible by default
Desktop and mobile versions Compatible by default
Microsoft Internet Explorer (IE)  
Desktop and mobile IE version 11 Compatible by default
Desktop IE versions 9 and 10

Capable when run in Windows 7 or newer, but not by default. Windows Vista and older operating systems, such as Windows XP, are not compatible with TLS 1.2 encryption.

Desktop IE versions 8 and below

Not compatible or stable with TLS 1.2 encryption.

Mozilla Firefox

Compatible with the most recent, stable version, regardless of operating system

Firefox 27 and higher

Compatible by default

Firefox 23 to 26

Capable, but not by default.

Firefox 22 and below

Not compatible with TLS 1.2 or higher encryption.

Google Chrome

Compatible with the most recent, stable version, regardless of operating system

Google Chrome 38 and higher

Compatible by default

Google Chrome 22 to 37

Capable when run in Windows XP SP3, Vista, or newer (desktop), OS X 10.6 (Snow Leopard) or newer (desktop), or Android 2.3 (Gingerbread) or newer (mobile)

Google Chrome 21 and below

Not compatible with TLS 1.2 encryption.

Google Android OS Browser  
Android 6.0 (Marshmellow) and higher

Compatible by default

Android 5.0 (Lollipop) and higher

Compatible by default

Android 4.4 (KitKat) to 4.4.4

Capable, but not by default.

Android 4.3 (Jelly Bean) and below

Not compatible with TLS 1.2 encryption.

Apple Safari  
Desktop Safari versions 7 and higher for OS X 10.9 (Mavericks) and higher

Compatible by default

Desktop Safari versions 6 and below for OS X 10.8 (Mountain Lion) and below

Not compatible with TLS 1.2 encryption.

Mobile Safari versions 5 and higher for iOS 5 and higher

Compatible by default

Mobile Safari for iOS 4 and below

Not compatible with TLS 1.2 encryption.