In order to complete the problem description, I set the option “-Djavax.net.debug=SSL” to the JVM in order tobetter ivestigate the stacktrace of the error. You can fin hereinafter the related log:
keyStore is : keyStore type is : jks keyStore provider is : init keystore init keymanager of type SunX509 trustStore is: C:\Program Files\Java\jre1.8.0_92\lib\security\cacerts trustStore type is : jks trustStore provider is : init truststore adding as trusted cert: Subject: CN=Equifax Secure Global eBusiness CA-1, O=Equifax Secure Inc., C=US Issuer: CN=Equifax Secure Global eBusiness CA-1, O=Equifax Secure Inc., C=US Algorithm: RSA; Serial number: 0xc3517 Valid from Mon Jun 21 06:00:00 CEST 1999 until Mon Jun 22 06:00:00 CEST 2020 adding as trusted cert: Subject: CN=SecureTrust CA, O=SecureTrust Corporation, C=US Issuer: CN=SecureTrust CA, O=SecureTrust Corporation, C=US Algorithm: RSA; Serial number: 0xcf08e5c0816a5ad427ff0eb271859d0 Valid from Tue Nov 07 20:31:18 CET 2006 until Mon Dec 31 20:40:55 CET 2029 trigger seeding of SecureRandom done seeding SecureRandom Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_CBC_SHA256 Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384 Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384 Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384 Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Allow unsafe renegotiation: false Allow legacy hello messages: true Is initial handshake: true Is secure renegotiation: false Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 for TLSv1 Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1 Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 for TLSv1.1 %% No cached client session *** ClientHello, TLSv1.2 RandomCookie: GMT: 1474553078 bytes = { 97, 165, 242, 70, 17, 207, 94, 124, 191, 250, 0, 19, 241, 86, 141, 188, 47, 143, 200, 66, 162, 79, 151, 104, 109, 139, 154, 144 } Session ID: {} Cipher Suites: [TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256, TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256, TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, TLS_EMPTY_RENEGOTIATION_INFO_SCSV] Compression Methods: { 0 } Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1} Extension ec_point_formats, formats: [uncompressed] Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA *** main, WRITE: TLSv1.2 Handshake, length = 189 main, READ: TLSv1.2 Handshake, length = 1235 *** ServerHello, TLSv1.2 RandomCookie: GMT: 1474553078 bytes = { 3, 250, 184, 59, 171, 97, 220, 6, 168, 187, 197, 108, 72, 130, 12, 38, 250, 68, 145, 75, 126, 120, 95, 94, 119, 203, 148, 238 } Session ID: {88, 228, 229, 246, 10, 49, 190, 234, 22, 159, 94, 252, 85, 206, 217, 123, 210, 11, 142, 183, 97, 39, 148, 65, 33, 190, 52, 122, 211, 226, 193, 160} Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Compression Method: 0 Extension renegotiation_info, renegotiated_connection: <empty> *** %% Initialized: [Session-1, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256] ** TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 *** Certificate chain chain [0] = [ [ Version: V3 Subject: CN=localhost, OU=ApacheDS, O=ASF, C=US Signature Algorithm: SHA256withRSA, OID = 1.2.840.113549.1.1.11 Key: Sun RSA public key, 2048 bits modulus: 19694022897753370855024226067897158073373712403717038689442717789193620856177748076883580905823384226420391325696571991489248437743789693887749967552693014905096292208789431622338120333110385365368496194179106667103097380342511341749026195520853982022002731247163065109199188420574049606093279058138612361346129073906833936335031851263478058500226722314234588499181434045874526338977873146793077303549168232689832459280249402307133420779862809823870761441419211019038709559895858973193607695734706824666327344291079103614468270904459494258007741934812915033513213664648071786694730906444492853746070458409303599705913 public exponent: 65537 Validity: [From: Wed Apr 05 11:12:11 CEST 2017, To: Fri Apr 05 11:12:11 CEST 2019] Issuer: CN=localhost, OU=ApacheDS, O=ASF, C=US SerialNumber: [ 6b297e82] Certificate Extensions: 1 [1]: ObjectId: 2.5.29.14 Criticality=false SubjectKeyIdentifier [ KeyIdentifier [ 0000: 34 13 78 51 0E 73 20 06 58 BE 94 2E 94 53 77 42 4.xQ.s .X....SwB 0010: 9B E0 05 35 ...5 ] ] ] Algorithm: [SHA256withRSA] Signature: 0000: 8F 5B E9 47 9B 68 E2 78 BD E0 59 16 A6 45 BE EE .[.G.h.x..Y..E.. 0010: 97 51 14 72 0C 8A 94 51 B4 09 7D D6 B3 02 29 2E .Q.r...Q......). 0020: 76 CC 42 0A FD 4C 5A A8 07 2D 66 09 CD 2C 18 3E v.B..LZ..-f..,.> 0030: 2B 6B 7A 2C 0E D0 B9 DB 66 5B 71 EC A6 E2 84 55 +kz,....f[q....U 0040: CA 88 8C D2 6E A3 45 43 3B E9 F4 B9 72 9C 17 6A ....n.EC;...r..j 0050: A0 58 C5 46 7D 72 04 5A 58 3A 70 B4 7E 20 5F 84 .X.F.r.ZX:p.. _. 0060: CF 71 98 34 EF 18 F2 4B 1F FF 06 24 DE 42 5F F7 .q.4...K...$.B_. 0070: 8E F2 61 C7 20 2C 49 24 78 3F BC E8 C4 C1 65 E9 ..a. ,I$x?....e. 0080: 12 6A 68 D4 1C 51 B2 92 E4 77 BC 17 2B 48 FE CB .jh..Q...w..+H.. 0090: 81 19 F6 66 23 46 32 6E CB C3 4F 85 91 7C DA F6 ...f#F2n..O..... 00A0: E2 3F 54 66 87 D1 95 C9 42 46 69 7E E6 EE AC 97 .?Tf....BFi..... 00B0: 76 34 40 33 F6 8F 17 CB EC 9B 43 46 2D F6 1C 63 v...@3......cf-..c 00C0: D6 63 76 D4 73 7E 41 31 4F F1 D8 04 C4 90 27 01 .cv.s.A1O.....'. 00D0: 68 97 01 46 5B 0D B5 FA C4 B6 97 6D 01 CE 42 95 h..F[......m..B. 00E0: F0 65 FC 38 0D E5 03 CA 76 89 79 25 64 BB 67 77 .e.8....v.y%d.gw 00F0: 4A 25 68 D7 B1 DA 03 34 E0 DA 15 10 16 6F 68 C0 J%h....4.....oh. ] *** %% Invalidated: [Session-1, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256] main, SEND TLSv1.2 ALERT: fatal, description = certificate_unknown main, WRITE: TLSv1.2 Alert, length = 2 main, called closeSocket() main, handling exception: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target main, called close() Sorry for a so long log, But I thinks is usefull for a comple troubleshuting. 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