diff --git a/inference-engine/src/gna_plugin/gna_plugin_internal.hpp b/inference-engine/src/gna_plugin/gna_plugin_internal.hpp
index c6d8d8b79ed..9a57dbc123d 100644
--- a/inference-engine/src/gna_plugin/gna_plugin_internal.hpp
+++ b/inference-engine/src/gna_plugin/gna_plugin_internal.hpp
@@ -1,4 +1,4 @@
-// Copyright (C) 2018-2020 Intel Corporation
+// Copyright (C) 2018-2021 Intel Corporation
 // SPDX-License-Identifier: Apache-2.0
 //
 
@@ -17,6 +17,7 @@ namespace GNAPluginNS {
 
 class GNAPluginInternal  : public InferenceEngine::InferencePluginInternal {
 private:
+    std::mutex syncCallsToLoadExeNetworkImpl;
     Config defaultConfig;
     std::weak_ptr <GNAPlugin> plgPtr;
     std::shared_ptr<GNAPlugin> GetCurrentPlugin() const {
@@ -32,6 +33,7 @@ public:
     InferenceEngine::ExecutableNetworkInternal::Ptr LoadExeNetworkImpl(
                                                 const InferenceEngine::CNNNetwork &network,
                                                 const std::map<std::string, std::string> &config) override {
+        std::lock_guard<std::mutex> lock{ syncCallsToLoadExeNetworkImpl };
         Config updated_config(defaultConfig);
         updated_config.UpdateFromMap(config);
         auto plg = std::make_shared<GNAPlugin>(updated_config.keyConfigMap);
diff --git a/inference-engine/tests/functional/plugin/gna/shared_tests_instances/behavior/core_threading_tests.cpp b/inference-engine/tests/functional/plugin/gna/shared_tests_instances/behavior/core_threading_tests.cpp
index 1adbd58045b..4beebf8c118 100644
--- a/inference-engine/tests/functional/plugin/gna/shared_tests_instances/behavior/core_threading_tests.cpp
+++ b/inference-engine/tests/functional/plugin/gna/shared_tests_instances/behavior/core_threading_tests.cpp
@@ -1,4 +1,4 @@
-// Copyright (C) 2020 Intel Corporation
+// Copyright (C) 2020-2021 Intel Corporation
 // SPDX-License-Identifier: Apache-2.0
 //
 
@@ -16,7 +16,7 @@ std::vector< std::tuple<Device, Config> > paramsWithIterations{ params[0], param
 
 INSTANTIATE_TEST_CASE_P(GNA, CoreThreadingTests, testing::ValuesIn(params), CoreThreadingTests::getTestCaseName);
 
-INSTANTIATE_TEST_CASE_P(DISABLED_GNA, CoreThreadingTestsWithIterations,
+INSTANTIATE_TEST_CASE_P(GNA, CoreThreadingTestsWithIterations,
     testing::Combine(testing::ValuesIn(paramsWithIterations),
                      testing::Values(3),
                      testing::Values(4),