diff --git a/sharing/flags/generated/nearby_sharing_feature_flags.h b/sharing/flags/generated/nearby_sharing_feature_flags.h
index 2a30f858..71b1295a 100755
--- a/sharing/flags/generated/nearby_sharing_feature_flags.h
+++ b/sharing/flags/generated/nearby_sharing_feature_flags.h
@@ -64,6 +64,9 @@ constexpr auto kShowAutoUpdateSetting =
 // The default time in milliseconds a cached entry can be in LOST state.
 constexpr auto kDiscoveryCacheLostExpiryMs =
     flags::Flag<int64_t>(kConfigPackage, "45658774", 15000);
+// When true, enable file sync feature.
+constexpr auto kEnableFileSync =
+    flags::Flag<bool>(kConfigPackage, "45762616", false);
 // When true, enable wifi hotspot medium for HP Realtek devices.
 constexpr auto kEnableWifiHotspotForHpRealtekDevices =
     flags::Flag<bool>(kConfigPackage, "45673628", false);
@@ -109,6 +112,7 @@ inline absl::btree_map<int, const flags::Flag<bool>&> GetBoolFlags() {
       {45418908, kEnableSelfShareUi},
       {45459748, kEnableSendingDesktopEvents},
       {45409033, kShowAutoUpdateSetting},
+      {45762616, kEnableFileSync},
       {45673628, kEnableWifiHotspotForHpRealtekDevices},
       {45683539, kUseAlternateServiceUuidForDiscovery},
       {45662570, kEnableBetaLabel},
diff --git a/sharing/nearby_sharing_service_factory.cc b/sharing/nearby_sharing_service_factory.cc
index 01afe82c..baee53f8 100644
--- a/sharing/nearby_sharing_service_factory.cc
+++ b/sharing/nearby_sharing_service_factory.cc
@@ -40,7 +40,7 @@ NearbySharingServiceFactory* NearbySharingServiceFactory::GetInstance() {
 NearbySharingService* NearbySharingServiceFactory::CreateSharingService(
     SharingPlatform& sharing_platform,
     analytics::AnalyticsRecorder* analytics_recorder,
-    ::nearby::analytics::EventLogger* event_logger) {
+    ::nearby::analytics::EventLogger* event_logger, bool supports_file_sync) {
   if (nearby_sharing_service_ != nullptr) {
     return nullptr;
   }
@@ -66,7 +66,8 @@ NearbySharingService* NearbySharingServiceFactory::CreateSharingService(
       std::move(service_thread), context_.get(), sharing_platform,
       std::move(nearby_share_client_factory),
       std::move(nearby_connections_manager),
-      std::move(nearby_share_contact_manager), analytics_recorder);
+      std::move(nearby_share_contact_manager), analytics_recorder,
+      supports_file_sync);
 
   return nearby_sharing_service_.get();
 }
diff --git a/sharing/nearby_sharing_service_factory.h b/sharing/nearby_sharing_service_factory.h
index c7a60cac..a1612f76 100644
--- a/sharing/nearby_sharing_service_factory.h
+++ b/sharing/nearby_sharing_service_factory.h
@@ -33,7 +33,8 @@ class NearbySharingServiceFactory {
   NearbySharingService* CreateSharingService(
       nearby::sharing::api::SharingPlatform& sharing_platform,
       analytics::AnalyticsRecorder* analytics_recorder,
-      nearby::analytics::EventLogger* event_logger);
+      nearby::analytics::EventLogger* event_logger,
+      bool supports_file_sync);
 
  private:
   NearbySharingServiceFactory() = default;
diff --git a/sharing/nearby_sharing_service_impl.cc b/sharing/nearby_sharing_service_impl.cc
index 11de518d..fc21d2f4 100644
--- a/sharing/nearby_sharing_service_impl.cc
+++ b/sharing/nearby_sharing_service_impl.cc
@@ -237,13 +237,14 @@ NearbySharingServiceImpl::NearbySharingServiceImpl(
     std::unique_ptr<SharingRpcClientFactory> nearby_share_client_factory,
     std::unique_ptr<NearbyConnectionsManager> nearby_connections_manager,
     std::unique_ptr<NearbyShareContactManager> contact_manager,
-    analytics::AnalyticsRecorder* analytics_recorder)
+    analytics::AnalyticsRecorder* analytics_recorder, bool supports_file_sync)
     : service_thread_(std::move(service_thread)),
       context_(context),
       device_info_(sharing_platform.GetDeviceInfo()),
       preference_manager_(sharing_platform.GetPreferenceManager()),
       account_manager_(sharing_platform.GetAccountManager()),
       analytics_recorder_(*analytics_recorder),
+      supports_file_sync_(supports_file_sync),
       nearby_connections_manager_(std::move(nearby_connections_manager)),
       nearby_share_client_factory_(std::move(nearby_share_client_factory)),
       local_device_data_manager_(
@@ -1505,7 +1506,8 @@ NearbySharingServiceImpl::CreateEndpointInfo(
       static_cast<ShareTargetType>(device_info_.GetDeviceType());
 
   AdvertisementCapabilities capabilities{};
-  if (supports_file_sync_) {
+  if (supports_file_sync_ && NearbyFlags::GetInstance().GetBoolFlag(
+          config_package_nearby::nearby_sharing_feature::kEnableFileSync)) {
     capabilities.Add(AdvertisementCapabilities::Capability::kFileSync);
   }
   std::unique_ptr<Advertisement> advertisement = Advertisement::NewInstance(
diff --git a/sharing/nearby_sharing_service_impl.h b/sharing/nearby_sharing_service_impl.h
index 7f9a13ee..82813706 100644
--- a/sharing/nearby_sharing_service_impl.h
+++ b/sharing/nearby_sharing_service_impl.h
@@ -106,7 +106,8 @@ class NearbySharingServiceImpl
           nearby_share_client_factory,
       std::unique_ptr<NearbyConnectionsManager> nearby_connections_manager,
       std::unique_ptr<NearbyShareContactManager> contact_manager,
-      analytics::AnalyticsRecorder* analytics_recorder);
+      analytics::AnalyticsRecorder* analytics_recorder,
+      bool supports_file_sync);
   ~NearbySharingServiceImpl() override;
 
   // NearbySharingService
@@ -410,6 +411,8 @@ class NearbySharingServiceImpl
   AccountManager& account_manager_;
   // Used to create analytics events.
   analytics::AnalyticsRecorder& analytics_recorder_;
+  // Whether the device supports file sync extension.
+  const bool supports_file_sync_;
 
   std::unique_ptr<NearbyConnectionsManager> nearby_connections_manager_;
   std::unique_ptr<nearby::sharing::api::SharingRpcClientFactory>
@@ -524,7 +527,6 @@ class NearbySharingServiceImpl
   // If true, a new endpoint id will be generated at the next advertisement.
   bool force_new_endpoint_id_ = false;
   OutgoingTargetsManager outgoing_targets_manager_;
-  bool supports_file_sync_ = false;
 };
 
 }  // namespace nearby::sharing
diff --git a/sharing/nearby_sharing_service_impl_test.cc b/sharing/nearby_sharing_service_impl_test.cc
index 50ba2b95..8cd68d1a 100644
--- a/sharing/nearby_sharing_service_impl_test.cc
+++ b/sharing/nearby_sharing_service_impl_test.cc
@@ -485,7 +485,7 @@ class NearbySharingServiceImplTest : public testing::Test {
         /*nearby_share_client_factory=*/nullptr,
         absl::WrapUnique(fake_nearby_connections_manager_),
         absl::WrapUnique(contact_manager_),
-        analytics_recorder_.get());
+        analytics_recorder_.get(), /*supports_file_sync=*/false);
   }
 
   void SetVisibility(DeviceVisibility visibility) {