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When using kerberos with HDP it's not uncommon to find the odd strange encryption type floating around, possibly from a badly configured AD server. By adding the following to the Ambari -> Kerberos config section under supported encryption types its possible to isolate this issue for diagnostic.

While its probably not a wise idea to run with all these enabled in production having a full list of supported types can be useful for diagnostic or reference.

des-cbc-crc des-cbc-md4 des-cbc-md5 des3-cbc-sha1 arcfour-hmac arcfour-hmac-exp aes128-cts-hmac-sha1-96 aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha256-128 aes256-cts-hmac-sha384-192 camellia128-cts-cmac camellia256-cts-cmac
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