diff --git a/CryptoPkg/Library/TlsLib/InternalTlsLib.h b/CryptoPkg/Library/TlsLib/InternalTlsLib.h
index e75146648d..97727361e8 100644
--- a/CryptoPkg/Library/TlsLib/InternalTlsLib.h
+++ b/CryptoPkg/Library/TlsLib/InternalTlsLib.h
@@ -1,7 +1,7 @@
 /** @file
   Internal include file for TlsLib.
 
-Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -15,6 +15,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #ifndef __INTERNAL_TLS_LIB_H__
 #define __INTERNAL_TLS_LIB_H__
 
+#undef _WIN32
+#undef _WIN64
+
 #include <Library/BaseCryptLib.h>
 #include <openssl/ssl.h>
 #include <openssl/bio.h>
diff --git a/CryptoPkg/Library/TlsLib/TlsConfig.c b/CryptoPkg/Library/TlsLib/TlsConfig.c
index f103da4321..43e275d400 100644
--- a/CryptoPkg/Library/TlsLib/TlsConfig.c
+++ b/CryptoPkg/Library/TlsLib/TlsConfig.c
@@ -128,24 +128,30 @@ TlsSetVersion (
 
   ProtoVersion = (MajorVer << 8) | MinorVer;
 
+  //
+  // Bound TLS method to the particular specified version.
+  //
   switch (ProtoVersion) {
   case TLS1_VERSION:
     //
     // TLS 1.0
     //
-    SSL_set_ssl_method (TlsConn->Ssl, TLSv1_method ());
+    SSL_set_min_proto_version (TlsConn->Ssl, TLS1_VERSION);
+    SSL_set_max_proto_version (TlsConn->Ssl, TLS1_VERSION);
     break;
   case TLS1_1_VERSION:
     //
     // TLS 1.1
     //
-    SSL_set_ssl_method (TlsConn->Ssl, TLSv1_1_method ());
+    SSL_set_min_proto_version (TlsConn->Ssl, TLS1_1_VERSION);
+    SSL_set_max_proto_version (TlsConn->Ssl, TLS1_1_VERSION);
     break;
   case TLS1_2_VERSION:
     //
     // TLS 1.2
     //
-    SSL_set_ssl_method (TlsConn->Ssl, TLSv1_2_method ());
+    SSL_set_min_proto_version (TlsConn->Ssl, TLS1_2_VERSION);
+    SSL_set_max_proto_version (TlsConn->Ssl, TLS1_2_VERSION);
     break;
   default:
     //
@@ -384,8 +390,7 @@ TlsSetSessionId (
     return EFI_UNSUPPORTED;
   }
 
-  Session->session_id_length = SessionIdLen;
-  CopyMem (Session->session_id, SessionId, Session->session_id_length);
+  SSL_SESSION_set1_id (Session, (const unsigned char *)SessionId, SessionIdLen);
 
   return EFI_SUCCESS;
 }
@@ -847,7 +852,7 @@ TlsGetClientRandom (
     return;
   }
 
-  CopyMem (ClientRandom, TlsConn->Ssl->s3->client_random, SSL3_RANDOM_SIZE);
+  SSL_get_client_random (TlsConn->Ssl, ClientRandom, SSL3_RANDOM_SIZE);
 }
 
 /**
@@ -876,7 +881,7 @@ TlsGetServerRandom (
     return;
   }
 
-  CopyMem (ServerRandom, TlsConn->Ssl->s3->server_random, SSL3_RANDOM_SIZE);
+  SSL_get_server_random (TlsConn->Ssl, ServerRandom, SSL3_RANDOM_SIZE);
 }
 
 /**
@@ -916,7 +921,7 @@ TlsGetKeyMaterial (
     return EFI_UNSUPPORTED;
   }
 
-  CopyMem (KeyMaterial, Session->master_key, Session->master_key_length);
+  SSL_SESSION_get_master_key (Session, KeyMaterial, SSL3_MASTER_SECRET_SIZE);
 
   return EFI_SUCCESS;
 }
diff --git a/CryptoPkg/Library/TlsLib/TlsInit.c b/CryptoPkg/Library/TlsLib/TlsInit.c
index 6b1fd93ea9..f32148ac9a 100644
--- a/CryptoPkg/Library/TlsLib/TlsInit.c
+++ b/CryptoPkg/Library/TlsLib/TlsInit.c
@@ -1,7 +1,7 @@
 /** @file
   SSL/TLS Initialization Library Wrapper Implementation over OpenSSL.
 
-Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
 (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
@@ -33,14 +33,10 @@ TlsInitialize (
   // Performs initialization of crypto and ssl library, and loads required
   // algorithms.
   //
-  SSL_library_init ();
-
-  //
-  // Loads error strings from both crypto and ssl library.
-  //
-  SSL_load_error_strings ();
-
-  /// OpenSSL_add_all_algorithms();
+  OPENSSL_init_ssl (
+    OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS,
+    NULL
+    );
 
   //
   // Initialize the pseudorandom number generator.
@@ -103,34 +99,10 @@ TlsCtxNew (
   SSL_CTX_set_options (TlsCtx, SSL_OP_NO_SSLv3);
 
   //
-  // Treat as minimum accepted versions.  Client can use higher
-  // TLS version if server supports it
+  // Treat as minimum accepted versions by setting the minimal bound.
+  // Client can use higher TLS version if server supports it
   //
-  switch (ProtoVersion) {
-  case TLS1_VERSION:
-    //
-    // TLS 1.0
-    //
-    break;
-  case TLS1_1_VERSION:
-    //
-    // TLS 1.1
-    //
-    SSL_CTX_set_options (TlsCtx, SSL_OP_NO_TLSv1);
-    break;
-  case TLS1_2_VERSION:
-    //
-    // TLS 1.2
-    //
-    SSL_CTX_set_options (TlsCtx, SSL_OP_NO_TLSv1);
-    SSL_CTX_set_options (TlsCtx, SSL_OP_NO_TLSv1_1);
-    break;
-  default:
-    //
-    // Unsupported TLS/SSL Protocol Version.
-    //
-    break;
-  }
+  SSL_CTX_set_min_proto_version (TlsCtx, ProtoVersion);
 
   return (VOID *) TlsCtx;
 }
@@ -219,6 +191,11 @@ TlsNew (
     return NULL;
   }
 
+  //
+  // This retains compatibility with previous version of OpenSSL.
+  //
+  SSL_set_security_level (TlsConn->Ssl, 0);
+
   //
   // Initialize the created SSL Object
   //