diff --git a/DNNE.sln b/DNNE.sln
index ecd656b..90b74e5 100644
--- a/DNNE.sln
+++ b/DNNE.sln
@@ -19,6 +19,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "platform", "platform", "{95
 	ProjectSection(SolutionItems) = preProject
 		src\platform\dnne.h = src\platform\dnne.h
 		src\platform\platform.c = src\platform\platform.c
+		src\platform\platform_v4.cpp = src\platform\platform_v4.cpp
 	EndProjectSection
 EndProject
 Global
diff --git a/src/platform/dnne.h b/src/platform/dnne.h
index 6b4b6f1..68a842a 100644
--- a/src/platform/dnne.h
+++ b/src/platform/dnne.h
@@ -75,6 +75,8 @@ enum failure_type
 {
     failure_load_runtime = 1,
     failure_load_export,
+    failure_get_current_app_domain_id,
+	failure_get_current_app_domain_id_backup_try
 };
 typedef void (DNNE_CALLTYPE* failure_fn)(enum failure_type type, int error_code);
 
diff --git a/src/platform/platform_v4.cpp b/src/platform/platform_v4.cpp
index c3b85ef..8ac94e3 100644
--- a/src/platform/platform_v4.cpp
+++ b/src/platform/platform_v4.cpp
@@ -155,13 +155,26 @@ namespace
 
             // Release all other CLR resources
             (void)metahost->Release();
-            (void)runtimeInfo->Release();
+
 
             // Start the runtime
             hr = runtimeHost->Start();
             IF_FAILURE_RETURN_OR_ABORT(ret, failure_load_runtime, hr, &_prepare_lock);
 
-            (void)runtimeHost->GetCurrentAppDomainId(&_appDomainId);
+            hr = runtimeHost->GetCurrentAppDomainId(&_appDomainId);
+			if (hr != S_OK)
+			{
+				ICorRuntimeHost* oldRuntimeHost;
+				hr = runtimeInfo->GetInterface(CLSID_CorRuntimeHost, IID_ICorRuntimeHost, (void**)&oldRuntimeHost);
+				IF_FAILURE_RETURN_OR_ABORT(ret, failure_get_current_app_domain_id_backup_try, hr, &_prepare_lock);
+				IUnknown* pUnk2;
+				hr = oldRuntimeHost->GetDefaultDomain(&pUnk2);
+				IF_FAILURE_RETURN_OR_ABORT(ret, failure_get_current_app_domain_id_backup_try, hr, &_prepare_lock);
+				hr = runtimeHost->GetCurrentAppDomainId(&_appDomainId);
+			}
+			(void)runtimeInfo->Release();//can't release earlierincase backup failure
+
+			IF_FAILURE_RETURN_OR_ABORT(ret, failure_get_current_app_domain_id, hr, &_prepare_lock);
             (void)runtimeHost->QueryInterface(__uuidof(ICLRPrivRuntime), (void**)&_host);
             (void)runtimeHost->Release();
             assert(_host != nullptr);