Which browsers and operating systems support Let's Encrypt

Server
10

Windows XP:

  • Pre-SP3 will never work, because it lacks SHA2 support.
  • SP3: Chrome and IE don’t currently work because of the name constraints on our intermediate. We’re going to take a look at whether that’s possible to work around in the long run, but for now it doesn’t work.
  • Firefox works because it has its own validation code.
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