diff --git a/connections/connection_options.h b/connections/connection_options.h
index 8d09e755..7132aed4 100644
--- a/connections/connection_options.h
+++ b/connections/connection_options.h
@@ -37,8 +37,6 @@ struct ConnectionInfo {
   std::int32_t keep_alive_interval_millis;
   std::int32_t keep_alive_timeout_millis;
   std::optional<location::nearby::connections::MediumRole> medium_role;
-  std::vector<location::nearby::proto::connections::WifiDirectAuthType>
-      supported_wifi_direct_auth_types;
 };
 
 // Connection Options: used for both Advertising and Discovery.
diff --git a/connections/implementation/base_pcp_handler.cc b/connections/implementation/base_pcp_handler.cc
index 00a1e2b9..ba1a6247 100644
--- a/connections/implementation/base_pcp_handler.cc
+++ b/connections/implementation/base_pcp_handler.cc
@@ -29,7 +29,6 @@
 #include "absl/container/flat_hash_set.h"
 #include "absl/strings/escaping.h"
 #include "absl/strings/str_cat.h"
-#include "absl/strings/str_join.h"
 #include "absl/strings/string_view.h"
 #include "absl/time/time.h"
 #include "absl/types/span.h"
@@ -112,7 +111,6 @@ using ::location::nearby::connections::OsInfo;
 using ::location::nearby::connections::PresenceDevice;
 using ::location::nearby::connections::V1Frame;
 using ::location::nearby::proto::connections::OperationResultCode;
-using ::location::nearby::proto::connections::WifiDirectAuthType;
 using ::securegcm::UKey2Handshake;
 
 BasePcpHandler::BasePcpHandler(Mediums* mediums,
@@ -437,52 +435,6 @@ BooleanMediumSelector BasePcpHandler::ComputeIntersectionOfSupportedMediums(
           continue;
         }
       }
-      if (my_medium ==
-          location::nearby::proto::connections::Medium::WIFI_DIRECT) {
-        auto remote_supported_wifi_direct_auth_types =
-            pending_connection_info.connection_options.connection_info
-                .supported_wifi_direct_auth_types;
-        LOG(INFO) << "Remote supported WifiDirect auth types: "
-                << absl::StrJoin(
-                       remote_supported_wifi_direct_auth_types, ", ",
-                       [](std::string* out, int auth_type) {
-                         absl::StrAppend(
-                             out,
-                             WifiDirectAuthType_Name(
-                                 static_cast<WifiDirectAuthType>(auth_type)));
-                       });
-        auto local_supported_wifi_direct_auth_types =
-            mediums_->GetWifiDirect().GetSupportedWifiDirectAuthTypes();
-        LOG(INFO) << "Local supported WifiDirect auth types: "
-                << absl::StrJoin(
-                       local_supported_wifi_direct_auth_types, ", ",
-                       [](std::string* out, int auth_type) {
-                         absl::StrAppend(
-                             out,
-                             WifiDirectAuthType_Name(
-                                 static_cast<WifiDirectAuthType>(auth_type)));
-                       });
-        bool found_common_auth_type = false;
-        for (const auto& auth_type : local_supported_wifi_direct_auth_types) {
-          if (auth_type == WifiDirectAuthType::WIFI_DIRECT_TYPE_UNKNOWN) {
-            continue;
-          }
-          if (std::find(remote_supported_wifi_direct_auth_types.begin(),
-                        remote_supported_wifi_direct_auth_types.end(),
-                        auth_type) !=
-              remote_supported_wifi_direct_auth_types.end()) {
-            LOG(INFO) << "Found common WifiDirect auth type: "
-                      << WifiDirectAuthType_Name(auth_type);
-            mediums_->GetWifiDirect().SetPreferredWifiDirectAuthType(auth_type);
-            found_common_auth_type = true;
-            break;
-          }
-        }
-        if (!found_common_auth_type) {
-          LOG(INFO) << "No common WifiDirect auth type found, skip WifiDirect.";
-          continue;
-        }
-      }
 
       intersection.emplace(my_medium);
     }
@@ -887,17 +839,6 @@ ConnectionInfo BasePcpHandler::FillConnectionInfo(
   }
   connection_info.supported_mediums =
       GetSupportedConnectionMediumsByPriority(connection_options);
-  if (NearbyFlags::GetInstance().GetBoolFlag(
-          config_package_nearby::nearby_connections_feature::
-              kEnableWifiDirect)) {
-    connection_info.supported_wifi_direct_auth_types =
-        mediums_->GetWifiDirect().GetSupportedWifiDirectAuthTypes();
-    VLOG(1) << "Set SupportedWifiDirectAuthTypes for WIFI_DIRECT: "
-              << absl::StrJoin(connection_info.supported_wifi_direct_auth_types,
-                               ",");
-  } else {
-    connection_info.supported_wifi_direct_auth_types = {};
-  }
 
   if (!NearbyFlags::GetInstance().GetBoolFlag(
           config_package_nearby::nearby_connections_feature::
@@ -2115,20 +2056,6 @@ Exception BasePcpHandler::OnIncomingConnection(
               << absl::BytesToHexString(connection_info.ip_address)
               << "; has no mediumRole";
   }
-  connection_info.supported_wifi_direct_auth_types =
-      parser::MediumMetadataWFDAuthTypesToWFDAuthTypes(medium_metadata);
-  if (!connection_info.supported_wifi_direct_auth_types.empty()) {
-    LOG(INFO) << connection_request.endpoint_id()
-              << "'s supported WifiDirect auth types: "
-              << absl::StrJoin(
-                     connection_info.supported_wifi_direct_auth_types, ", ",
-                     [](std::string* out, int auth_type) {
-                       absl::StrAppend(
-                           out,
-                           WifiDirectAuthType_Name(
-                               static_cast<WifiDirectAuthType>(auth_type)));
-                     });
-  }
 
   // We've successfully connected to the device, and are now about to jump on to
   // the EncryptionRunner thread to start running our encryption protocol. We'll
diff --git a/connections/implementation/mediums/wifi_direct.cc b/connections/implementation/mediums/wifi_direct.cc
index 0bae2e66..874f9031 100644
--- a/connections/implementation/mediums/wifi_direct.cc
+++ b/connections/implementation/mediums/wifi_direct.cc
@@ -14,10 +14,8 @@
 
 #include "connections/implementation/mediums/wifi_direct.h"
 
-#include <algorithm>
 #include <string>
 #include <utility>
-#include <vector>
 
 #include "absl/strings/string_view.h"
 #include "internal/platform/cancellation_flag.h"
@@ -33,13 +31,6 @@ namespace {
 using ::location::nearby::proto::connections::OperationResultCode;
 }  // namespace
 
-WifiDirect::WifiDirect() : is_go_started_(false), is_connected_to_go_(false) {
-  supported_wifi_direct_auth_types_ = medium_.GetSupportedWifiDirectAuthTypes();
-  if (!supported_wifi_direct_auth_types_.empty()) {
-    preferred_wifi_direct_auth_type_ =
-        supported_wifi_direct_auth_types_.front();
-  }
-}
 WifiDirect::~WifiDirect() {
   while (!server_sockets_.empty()) {
     StopAcceptingConnections(server_sockets_.begin()->first);
@@ -297,15 +288,5 @@ ErrorOr<WifiDirectSocket> WifiDirect::Connect(
   return socket;
 }
 
-bool WifiDirect::SetPreferredWifiDirectAuthType(WifiDirectAuthType auth_type) {
-  if (std::find(supported_wifi_direct_auth_types_.begin(),
-                supported_wifi_direct_auth_types_.end(),
-                auth_type) == supported_wifi_direct_auth_types_.end()) {
-    return false;
-  }
-  preferred_wifi_direct_auth_type_ = auth_type;
-  return true;
-}
-
 }  // namespace connections
 }  // namespace nearby
diff --git a/connections/implementation/mediums/wifi_direct.h b/connections/implementation/mediums/wifi_direct.h
index e85d2e64..df2849b6 100644
--- a/connections/implementation/mediums/wifi_direct.h
+++ b/connections/implementation/mediums/wifi_direct.h
@@ -16,7 +16,6 @@
 #define CORE_INTERNAL_MEDIUMS_WIFI_DIRECT_H_
 
 #include <string>
-#include <vector>
 
 #include "absl/base/thread_annotations.h"
 #include "absl/container/flat_hash_map.h"
@@ -37,10 +36,8 @@ class WifiDirect {
   // Callback that is invoked when a new connection is accepted.
   using AcceptedConnectionCallback = absl::AnyInvocable<void(
       const std::string& service_id, WifiDirectSocket socket)>;
-  using WifiDirectAuthType =
-      ::location::nearby::proto::connections::WifiDirectAuthType;
 
-  WifiDirect();
+  WifiDirect() : is_go_started_(false), is_connected_to_go_(false) {}
   ~WifiDirect();
   // Not copyable or movable
   WifiDirect(const WifiDirect&) = delete;
@@ -97,19 +94,6 @@ class WifiDirect {
   WifiDirectCredentials* GetCredentials(absl::string_view service_id)
       ABSL_LOCKS_EXCLUDED(mutex_);
 
-  // Returns the supported WifiDirect auth types.
-  std::vector<WifiDirectAuthType> GetSupportedWifiDirectAuthTypes() {
-    return supported_wifi_direct_auth_types_;
-  }
-
-  // Returns the preferred WifiDirect auth type.
-  WifiDirectAuthType GetPreferredWifiDirectAuthType() {
-    return preferred_wifi_direct_auth_type_;
-  }
-
-  // Sets the preferred WifiDirect auth type.
-  bool SetPreferredWifiDirectAuthType(WifiDirectAuthType auth_type);
-
  private:
   mutable Mutex mutex_;
   static constexpr int kMaxConcurrentAcceptLoops = 5;
@@ -134,10 +118,6 @@ class WifiDirect {
   // used from accept_loops_runner_, and thus require pointer stability.
   absl::flat_hash_map<std::string, WifiDirectServerSocket> server_sockets_
       ABSL_GUARDED_BY(mutex_);
-  // The supported WifiDirect auth types.
-  std::vector<WifiDirectAuthType> supported_wifi_direct_auth_types_;
-  WifiDirectAuthType preferred_wifi_direct_auth_type_ =
-      WifiDirectAuthType::WIFI_DIRECT_TYPE_UNKNOWN;
 };
 }  // namespace connections
 }  // namespace nearby
diff --git a/connections/implementation/mediums/wifi_direct_test.cc b/connections/implementation/mediums/wifi_direct_test.cc
index 358df01a..930f3df1 100644
--- a/connections/implementation/mediums/wifi_direct_test.cc
+++ b/connections/implementation/mediums/wifi_direct_test.cc
@@ -190,40 +190,6 @@ TEST_F(WifiDirectTest, CanStartGOTheOtherFailConnect) {
   EXPECT_TRUE(wifi_direct_a.StopWifiDirect());
 }
 
-TEST_F(WifiDirectTest, GetSupportedWifiDirectAuthTypes) {
-  WifiDirect wifi_direct;
-  auto supported_types = wifi_direct.GetSupportedWifiDirectAuthTypes();
-  EXPECT_EQ(supported_types.size(), 1);
-  EXPECT_EQ(supported_types[0],
-            WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-}
-
-TEST_F(WifiDirectTest, GetPreferredWifiDirectAuthType_Default) {
-  WifiDirect wifi_direct;
-  // Default should be the first supported type, which is WIFI_DIRECT_WITH_PIN
-  EXPECT_EQ(wifi_direct.GetPreferredWifiDirectAuthType(),
-            WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-}
-
-TEST_F(WifiDirectTest, SetPreferredWifiDirectAuthType_Supported) {
-  WifiDirect wifi_direct;
-  // Attempt to set the preferred type to the already default/supported type.
-  EXPECT_TRUE(wifi_direct.SetPreferredWifiDirectAuthType(
-      WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PIN));
-  EXPECT_EQ(wifi_direct.GetPreferredWifiDirectAuthType(),
-            WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-}
-
-TEST_F(WifiDirectTest, SetPreferredWifiDirectAuthType_Unsupported) {
-  WifiDirect wifi_direct;
-  // Attempt to set an unsupported type.
-  EXPECT_FALSE(wifi_direct.SetPreferredWifiDirectAuthType(
-      WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD));
-  // Preferred type should remain the default.
-  EXPECT_EQ(wifi_direct.GetPreferredWifiDirectAuthType(),
-            WifiDirect::WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-}
-
 }  // namespace
 }  // namespace connections
 }  // namespace nearby
diff --git a/connections/implementation/offline_frames.cc b/connections/implementation/offline_frames.cc
index 31611d69..1168a5cc 100644
--- a/connections/implementation/offline_frames.cc
+++ b/connections/implementation/offline_frames.cc
@@ -86,7 +86,7 @@ V1Frame::FrameType GetFrameType(const OfflineFrame& frame) {
 ByteArray ForConnectionRequestConnections(
     const location::nearby::connections::ConnectionsDevice&
         proto_connections_device,
-    const ConnectionInfo& connection_info) {
+    const ConnectionInfo& conection_info) {
   OfflineFrame frame;
 
   frame.set_version(OfflineFrame::V1);
@@ -97,49 +97,42 @@ ByteArray ForConnectionRequestConnections(
     connection_request->mutable_connections_device()->MergeFrom(
         proto_connections_device);
   }
-  if (!connection_info.local_endpoint_id.empty()) {
-    connection_request->set_endpoint_id(connection_info.local_endpoint_id);
+  if (!conection_info.local_endpoint_id.empty()) {
+    connection_request->set_endpoint_id(conection_info.local_endpoint_id);
   }
-  if (!connection_info.local_endpoint_info.Empty()) {
+  if (!conection_info.local_endpoint_info.Empty()) {
     connection_request->set_endpoint_name(
-        connection_info.local_endpoint_info.string_data());
+        conection_info.local_endpoint_info.string_data());
     connection_request->set_endpoint_info(
-        connection_info.local_endpoint_info.string_data());
+        conection_info.local_endpoint_info.string_data());
   }
-  connection_request->set_nonce(connection_info.nonce);
+  connection_request->set_nonce(conection_info.nonce);
   auto* medium_metadata = connection_request->mutable_medium_metadata();
-  medium_metadata->set_supports_5_ghz(connection_info.supports_5_ghz);
-  if (!connection_info.bssid.empty())
-    medium_metadata->set_bssid(connection_info.bssid);
-  medium_metadata->set_ap_frequency(connection_info.ap_frequency);
-  if (!connection_info.ip_address.empty())
-    medium_metadata->set_ip_address(connection_info.ip_address);
+  medium_metadata->set_supports_5_ghz(conection_info.supports_5_ghz);
+  if (!conection_info.bssid.empty())
+    medium_metadata->set_bssid(conection_info.bssid);
+  medium_metadata->set_ap_frequency(conection_info.ap_frequency);
+  if (!conection_info.ip_address.empty())
+    medium_metadata->set_ip_address(conection_info.ip_address);
   if (NearbyFlags::GetInstance().GetBoolFlag(
           config_package_nearby::nearby_connections_feature::
               kEnableDynamicRoleSwitch) &&
-      connection_info.medium_role.has_value()) {
+      conection_info.medium_role.has_value()) {
     medium_metadata->mutable_medium_role()->MergeFrom(
-        connection_info.medium_role.value());
+        conection_info.medium_role.value());
   }
-  if (!connection_info.supported_wifi_direct_auth_types.empty()) {
-    for (const auto& auth_type :
-         connection_info.supported_wifi_direct_auth_types) {
-      medium_metadata->add_supported_wifi_direct_auth_types(
-          WFDAuthTypeToMediumMetadataWFDAuthType(auth_type));
-    }
-  }
-  if (!connection_info.supported_mediums.empty()) {
-    for (const auto& medium : connection_info.supported_mediums) {
+  if (!conection_info.supported_mediums.empty()) {
+    for (const auto& medium : conection_info.supported_mediums) {
       connection_request->add_mediums(MediumToConnectionRequestMedium(medium));
     }
   }
-  if (connection_info.keep_alive_interval_millis > 0) {
+  if (conection_info.keep_alive_interval_millis > 0) {
     connection_request->set_keep_alive_interval_millis(
-        connection_info.keep_alive_interval_millis);
+        conection_info.keep_alive_interval_millis);
   }
-  if (connection_info.keep_alive_timeout_millis > 0) {
+  if (conection_info.keep_alive_timeout_millis > 0) {
     connection_request->set_keep_alive_timeout_millis(
-        connection_info.keep_alive_timeout_millis);
+        conection_info.keep_alive_timeout_millis);
   }
 
   return ToBytes(std::move(frame));
@@ -371,11 +364,14 @@ ByteArray ForBwuWifiAwarePathAvailable(const std::string& service_id,
   return ToBytes(std::move(frame));
 }
 
-ByteArray ForBwuWifiDirectPathAvailable(
-    const std::string& ssid, const std::string& password, std::int32_t port,
-    std::int32_t frequency, bool supports_disabling_encryption,
-    const std::string& gateway, const std::string& service_name,
-    const std::string& pin) {
+ByteArray ForBwuWifiDirectPathAvailable(const std::string& ssid,
+                                        const std::string& password,
+                                        std::int32_t port,
+                                        std::int32_t frequency,
+                                        bool supports_disabling_encryption,
+                                        const std::string& gateway,
+                                        const std::string& service_name,
+                                        const std::string& pin) {
   OfflineFrame frame;
 
   frame.set_version(OfflineFrame::V1);
@@ -739,44 +735,6 @@ std::vector<Medium> ConnectionRequestMediumsToMediums(
   return result;
 }
 
-MediumMetadata::WifiDirectAuthType WFDAuthTypeToMediumMetadataWFDAuthType(
-    WifiDirectAuthType wifi_direct_auth_type) {
-  switch (wifi_direct_auth_type) {
-    case WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD:
-      return MediumMetadata::WIFI_DIRECT_WITH_PASSWORD;
-    case WifiDirectAuthType::WIFI_DIRECT_WITH_PIN:
-      return MediumMetadata::WIFI_DIRECT_WITH_PIN;
-    default:
-      return MediumMetadata::WIFI_DIRECT_TYPE_UNKNOWN;
-  }
-}
-
-WifiDirectAuthType MediumMetadataWFDAuthTypeToWFDAuthType(
-    MediumMetadata::WifiDirectAuthType wifi_direct_auth_type) {
-  switch (wifi_direct_auth_type) {
-    case MediumMetadata::WIFI_DIRECT_WITH_PASSWORD:
-      return WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD;
-    case MediumMetadata::WIFI_DIRECT_WITH_PIN:
-      return WifiDirectAuthType::WIFI_DIRECT_WITH_PIN;
-    default:
-      return WifiDirectAuthType::WIFI_DIRECT_TYPE_UNKNOWN;
-  }
-}
-
-std::vector<WifiDirectAuthType> MediumMetadataWFDAuthTypesToWFDAuthTypes(
-    const MediumMetadata& medium_metadata) {
-  std::vector<WifiDirectAuthType> result;
-  for (const auto& int_wifi_direct_auth_type :
-       medium_metadata.supported_wifi_direct_auth_types()) {
-    // The int_wifi_direct_auth_type is guaranteed to be a valid
-    // MediumMetadata::WifiDirectAuthType by the proto spec.
-    result.push_back(MediumMetadataWFDAuthTypeToWFDAuthType(
-        static_cast<MediumMetadata::WifiDirectAuthType>(
-            int_wifi_direct_auth_type)));
-  }
-  return result;
-}
-
 }  // namespace parser
 }  // namespace connections
 }  // namespace nearby
diff --git a/connections/implementation/offline_frames.h b/connections/implementation/offline_frames.h
index 0114d83f..bbf15dbe 100644
--- a/connections/implementation/offline_frames.h
+++ b/connections/implementation/offline_frames.h
@@ -32,9 +32,6 @@ namespace parser {
 
 using UpgradePathInfo = ::location::nearby::connections::
     BandwidthUpgradeNegotiationFrame::UpgradePathInfo;
-using MediumMetadata = ::location::nearby::connections::MediumMetadata;
-using WifiDirectAuthType =
-    ::location::nearby::proto::connections::WifiDirectAuthType;
 
 // Serialize/Deserialize Nearby Connections Protocol messages.
 
@@ -128,12 +125,7 @@ Medium ConnectionRequestMediumToMedium(
 std::vector<Medium> ConnectionRequestMediumsToMediums(
     const location::nearby::connections::ConnectionRequestFrame&
         connection_request_frame);
-MediumMetadata::WifiDirectAuthType WFDAuthTypeToMediumMetadataWFDAuthType(
-    WifiDirectAuthType wifi_direct_auth_type);
-WifiDirectAuthType MediumMetadataWFDAuthTypeToWFDAuthType(
-    MediumMetadata::WifiDirectAuthType wifi_direct_auth_type);
-std::vector<WifiDirectAuthType> MediumMetadataWFDAuthTypesToWFDAuthTypes(
-    const MediumMetadata& medium_metadata);
+
 }  // namespace parser
 }  // namespace connections
 }  // namespace nearby
diff --git a/connections/implementation/offline_frames_test.cc b/connections/implementation/offline_frames_test.cc
index 4f039d41..9ec2377e 100644
--- a/connections/implementation/offline_frames_test.cc
+++ b/connections/implementation/offline_frames_test.cc
@@ -42,12 +42,8 @@ using ::location::nearby::connections::OsInfo;
 using ::location::nearby::connections::PayloadTransferFrame;
 using ::location::nearby::connections::V1Frame;
 using Medium = ::location::nearby::proto::connections::Medium;
-using WifiDirectAuthType =
-    ::location::nearby::proto::connections::WifiDirectAuthType;
-using MediumMetadata = ::location::nearby::connections::MediumMetadata;
 using ::location::nearby::connections::MediumRole;
 using ::protobuf_matchers::EqualsProto;
-using ::testing::Pointwise;
 
 constexpr absl::string_view kEndpointId{"ABC"};
 constexpr absl::string_view kEndpointName{"XYZ"};
@@ -284,76 +280,6 @@ TEST(OfflineFramesTest, CanGeneratePresenceConnectionRequest) {
   EXPECT_THAT(message, EqualsProto(kExpected));
 }
 
-TEST(OfflineFramesTest,
-     ForConnectionRequestConnectionsPopulatesWifiDirectAuthTypes) {
-  constexpr absl::string_view kExpected =
-      R"pb(
-    version: V1
-    v1: <
-      type: CONNECTION_REQUEST
-      connection_request: <
-        endpoint_id: "ABC"
-        endpoint_name: "XYZ"
-        endpoint_info: "XYZ"
-        nonce: 1234
-        medium_metadata: <
-          supports_5_ghz: true
-          bssid: "FF:FF:FF:FF:FF:FF"
-          ip_address: "8xqT"
-          ap_frequency: 2412
-          supported_wifi_direct_auth_types: WIFI_DIRECT_WITH_PIN
-          supported_wifi_direct_auth_types: WIFI_DIRECT_WITH_PASSWORD
-        >
-        mediums: MDNS
-        mediums: BLUETOOTH
-        mediums: WIFI_HOTSPOT
-        mediums: BLE
-        mediums: WIFI_LAN
-        mediums: WIFI_AWARE
-        mediums: NFC
-        mediums: WIFI_DIRECT
-        mediums: WEB_RTC
-        mediums: USB
-        mediums: AWDL
-        keep_alive_interval_millis: 1000
-        keep_alive_timeout_millis: 5000
-        connections_device {
-          endpoint_id: "ABC"
-          endpoint_type: CONNECTIONS_ENDPOINT
-          endpoint_info: "XYZ"
-        }
-      >
-    >)pb";
-
-  ConnectionInfo connection_info{std::string(kEndpointId),
-                                 ByteArray{std::string(kEndpointName)},
-                                 kNonce,
-                                 kSupports5ghz,
-                                 std::string(kBssid),
-                                 kApFrequency,
-                                 std::string(kIp4Bytes),
-                                 std::vector<Medium, std::allocator<Medium>>(
-                                     kMediums.begin(), kMediums.end()),
-                                 kKeepAliveIntervalMillis,
-                                 kKeepAliveTimeoutMillis};
-  connection_info.supported_wifi_direct_auth_types = {
-      WifiDirectAuthType::WIFI_DIRECT_WITH_PIN,
-      WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD};
-
-  location::nearby::connections::ConnectionsDevice connections_device;
-  connections_device.set_endpoint_id("ABC");
-  connections_device.set_endpoint_type(
-      location::nearby::connections::CONNECTIONS_ENDPOINT);
-  connections_device.set_endpoint_info("XYZ");
-
-  ByteArray bytes =
-      ForConnectionRequestConnections(connections_device, connection_info);
-  auto response = FromBytes(bytes);
-  ASSERT_TRUE(response.ok());
-  OfflineFrame message = response.result();
-  EXPECT_THAT(message, EqualsProto(kExpected));
-}
-
 TEST(OfflineFramesTest, CanGenerateConnectionResponse) {
   constexpr absl::string_view kExpected =
       R"pb(
@@ -804,49 +730,6 @@ TEST(OfflineFramesTest, CanGenerateBwuPathRequest) {
   EXPECT_THAT(message, EqualsProto(kExpected));
 }
 
-TEST(OfflineFramesTest, WFDAuthTypeToMediumMetadataWFDAuthType) {
-  EXPECT_EQ(WFDAuthTypeToMediumMetadataWFDAuthType(
-                WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD),
-            MediumMetadata::WIFI_DIRECT_WITH_PASSWORD);
-  EXPECT_EQ(WFDAuthTypeToMediumMetadataWFDAuthType(
-                WifiDirectAuthType::WIFI_DIRECT_WITH_PIN),
-            MediumMetadata::WIFI_DIRECT_WITH_PIN);
-  EXPECT_EQ(WFDAuthTypeToMediumMetadataWFDAuthType(
-                WifiDirectAuthType::WIFI_DIRECT_TYPE_UNKNOWN),
-            MediumMetadata::WIFI_DIRECT_TYPE_UNKNOWN);
-}
-
-TEST(OfflineFramesTest, MediumMetadataWFDAuthTypeToWFDAuthType) {
-  EXPECT_EQ(MediumMetadataWFDAuthTypeToWFDAuthType(
-                MediumMetadata::WIFI_DIRECT_WITH_PASSWORD),
-            WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD);
-  EXPECT_EQ(MediumMetadataWFDAuthTypeToWFDAuthType(
-                MediumMetadata::WIFI_DIRECT_WITH_PIN),
-            WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-  EXPECT_EQ(MediumMetadataWFDAuthTypeToWFDAuthType(
-                MediumMetadata::WIFI_DIRECT_TYPE_UNKNOWN),
-            WifiDirectAuthType::WIFI_DIRECT_TYPE_UNKNOWN);
-}
-
-TEST(OfflineFramesTest, MediumMetadataWFDAuthTypesToWFDAuthTypes) {
-  MediumMetadata medium_metadata;
-  medium_metadata.add_supported_wifi_direct_auth_types(
-      MediumMetadata::WIFI_DIRECT_WITH_PASSWORD);
-  medium_metadata.add_supported_wifi_direct_auth_types(
-      MediumMetadata::WIFI_DIRECT_WITH_PIN);
-
-  std::vector<WifiDirectAuthType> expected = {
-      WifiDirectAuthType::WIFI_DIRECT_WITH_PASSWORD,
-      WifiDirectAuthType::WIFI_DIRECT_WITH_PIN};
-
-  EXPECT_THAT(MediumMetadataWFDAuthTypesToWFDAuthTypes(medium_metadata),
-              Pointwise(testing::Eq(), expected));
-
-  MediumMetadata empty_medium_metadata;
-  EXPECT_TRUE(
-      MediumMetadataWFDAuthTypesToWFDAuthTypes(empty_medium_metadata).empty());
-}
-
 }  // namespace
 }  // namespace parser
 }  // namespace connections
diff --git a/internal/platform/implementation/g3/wifi_direct.h b/internal/platform/implementation/g3/wifi_direct.h
index fe9ec31d..f53d1b7e 100644
--- a/internal/platform/implementation/g3/wifi_direct.h
+++ b/internal/platform/implementation/g3/wifi_direct.h
@@ -182,12 +182,6 @@ class WifiDirectMedium : public api::WifiDirectMedium {
     return std::nullopt;
   }
 
-  // Returns the supported WifiDirect auth types.
-  std::vector<WifiDirectAuthType> GetSupportedWifiDirectAuthTypes()
-      const override {
-    return {WifiDirectAuthType::WIFI_DIRECT_WITH_PIN};
-  }
-
  private:
   absl::Mutex mutex_;
 
diff --git a/internal/platform/implementation/wifi_direct.h b/internal/platform/implementation/wifi_direct.h
index adfcf55f..0d267b29 100644
--- a/internal/platform/implementation/wifi_direct.h
+++ b/internal/platform/implementation/wifi_direct.h
@@ -19,7 +19,6 @@
 #include <memory>
 #include <string>
 #include <utility>
-#include <vector>
 
 #include "absl/strings/string_view.h"
 #include "absl/types/optional.h"
@@ -82,9 +81,6 @@ class WifiDirectServerSocket {
 // Container of operations that can be performed over the WifiLan medium.
 class WifiDirectMedium {
  public:
-  using WifiDirectAuthType =
-      ::location::nearby::proto::connections::WifiDirectAuthType;
-
   virtual ~WifiDirectMedium() = default;
 
   // If the WiFi Adaptor supports to start a WifiDirect interface.
@@ -123,10 +119,6 @@ class WifiDirectMedium {
   // Returns the port range as a pair of min and max port.
   virtual absl::optional<std::pair<std::int32_t, std::int32_t>>
   GetDynamicPortRange() = 0;
-
-  // Returns the supported WifiDirect auth types.
-  virtual std::vector<WifiDirectAuthType> GetSupportedWifiDirectAuthTypes()
-      const = 0;
 };
 
 }  // namespace api
diff --git a/internal/platform/implementation/windows/wifi_direct.h b/internal/platform/implementation/windows/wifi_direct.h
index d2e71daf..154c13e1 100644
--- a/internal/platform/implementation/windows/wifi_direct.h
+++ b/internal/platform/implementation/windows/wifi_direct.h
@@ -25,7 +25,6 @@
 #include <memory>
 #include <string>
 #include <utility>
-#include <vector>
 
 // Nearby connections headers
 #include "absl/base/nullability.h"
@@ -211,10 +210,6 @@ class WifiDirectMedium : public api::WifiDirectMedium {
     return absl::nullopt;
   }
 
-  // Returns the supported WifiDirect auth types.
-  std::vector<WifiDirectAuthType> GetSupportedWifiDirectAuthTypes()
-      const override;
-
  private:
   enum Value : char {
     kMediumStatusIdle = 0,
diff --git a/internal/platform/implementation/windows/wifi_direct_medium.cc b/internal/platform/implementation/windows/wifi_direct_medium.cc
index c09c81f0..c6ed7775 100644
--- a/internal/platform/implementation/windows/wifi_direct_medium.cc
+++ b/internal/platform/implementation/windows/wifi_direct_medium.cc
@@ -18,7 +18,6 @@
 #include <string>
 #include <string_view>
 #include <utility>
-#include <vector>
 
 #include "absl/strings/str_format.h"
 #include "absl/strings/string_view.h"
@@ -738,11 +737,5 @@ bool WifiDirectMedium::DisconnectWifiDirect() {
   return false;
 }
 
-std::vector<WifiDirectMedium::WifiDirectAuthType>
-WifiDirectMedium::GetSupportedWifiDirectAuthTypes() const {
-  // Windows only supports WifiDirect with Service Discovery, which uses a PIN.
-  return {WifiDirectAuthType::WIFI_DIRECT_WITH_PIN};
-}
-
 }  // namespace windows
 }  // namespace nearby
diff --git a/internal/platform/wifi_direct.h b/internal/platform/wifi_direct.h
index b7d33398..33b6900f 100644
--- a/internal/platform/wifi_direct.h
+++ b/internal/platform/wifi_direct.h
@@ -19,7 +19,6 @@
 #include <memory>
 #include <string>
 #include <utility>
-#include <vector>
 
 #include "absl/base/thread_annotations.h"
 #include "absl/strings/string_view.h"
@@ -153,8 +152,6 @@ class WifiDirectServerSocket final {
 class WifiDirectMedium {
  public:
   using Platform = api::ImplementationPlatform;
-  using WifiDirectAuthType =
-      ::location::nearby::proto::connections::WifiDirectAuthType;
 
   WifiDirectMedium() : impl_(Platform::CreateWifiDirectMedium()) {}
   ~WifiDirectMedium() = default;
@@ -201,14 +198,6 @@ class WifiDirectMedium {
     return *impl_;
   }
 
-  // Returns the supported WifiDirect auth types.
-  std::vector<WifiDirectAuthType> GetSupportedWifiDirectAuthTypes()
-      const {
-    // NOTE: This assumes that supported_wifi_direct_auth_types_ is populated
-    // during the constructor or at some other initialization phase.
-    return impl_->GetSupportedWifiDirectAuthTypes();
-  }
-
  private:
   Mutex mutex_;
   std::unique_ptr<api::WifiDirectMedium> impl_;
diff --git a/internal/platform/wifi_direct_test.cc b/internal/platform/wifi_direct_test.cc
index 2139b0af..f8ecb636 100644
--- a/internal/platform/wifi_direct_test.cc
+++ b/internal/platform/wifi_direct_test.cc
@@ -282,15 +282,5 @@ TEST_F(WifiDirectMediumTest, CanStartDirectGOThatOtherFailConnect) {
   EXPECT_TRUE(wifi_direct_a.StopWifiDirect());
 }
 
-TEST_F(WifiDirectMediumTest, GetSupportedWifiDirectAuthTypes) {
-  WifiDirectMedium wifi_direct_a;
-  // g3 only supports WifiDirect with auth type of PIN.
-  auto supported_types = wifi_direct_a.GetSupportedWifiDirectAuthTypes();
-  EXPECT_EQ(supported_types.size(), 1);
-  EXPECT_EQ(supported_types[0],
-            location::nearby::proto::connections::
-                WifiDirectAuthType::WIFI_DIRECT_WITH_PIN);
-}
-
 }  // namespace
 }  // namespace nearby