Index: include/lldb/Host/Socket.h
===================================================================
--- include/lldb/Host/Socket.h
+++ include/lldb/Host/Socket.h
@@ -50,6 +50,9 @@
 
   ~Socket() override;
 
+  static llvm::Error Initialize();
+  static void Terminate();
+
   static std::unique_ptr<Socket> Create(const SocketProtocol protocol,
                                         bool child_processes_inherit,
                                         Status &error);
Index: source/Host/common/Socket.cpp
===================================================================
--- source/Host/common/Socket.cpp
+++ source/Host/common/Socket.cpp
@@ -19,6 +19,8 @@
 
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Errno.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/WindowsError.h"
 
 #ifndef LLDB_DISABLE_POSIX
 #include "lldb/Host/posix/DomainSocket.h"
@@ -78,6 +80,32 @@
 
 Socket::~Socket() { Close(); }
 
+llvm::Error Socket::Initialize() {
+#if defined(_WIN32)
+  auto wVersion = WINSOCK_VERSION;
+  WSADATA wsaData;
+  int err = ::WSAStartup(wVersion, &wsaData);
+  if (err == 0) {
+    if (wsaData.wVersion < wVersion) {
+      WSACleanup();
+      return llvm::make_error<llvm::StringError>(
+          "WSASock version is not expected.", llvm::inconvertibleErrorCode());
+    }
+  } else {
+    return llvm::make_error<llvm::StringError>(
+        "WSAStartup error.", llvm::mapWindowsError(::WSAGetLastError()));
+  }
+#endif
+
+  return llvm::Error::success();
+}
+
+void Socket::Terminate(void) {
+#if defined(_WIN32)
+  ::WSACleanup();
+#endif
+}
+
 std::unique_ptr<Socket> Socket::Create(const SocketProtocol protocol,
                                        bool child_processes_inherit,
                                        Status &error) {
Index: source/Initialization/SystemInitializerCommon.cpp
===================================================================
--- source/Initialization/SystemInitializerCommon.cpp
+++ source/Initialization/SystemInitializerCommon.cpp
@@ -17,6 +17,7 @@
 #include "lldb/Host/FileSystem.h"
 #include "lldb/Host/Host.h"
 #include "lldb/Host/HostInfo.h"
+#include "lldb/Host/Socket.h"
 #include "lldb/Utility/Log.h"
 #include "lldb/Utility/Reproducer.h"
 #include "lldb/Utility/Timer.h"
@@ -114,6 +115,10 @@
   ProcessWindowsLog::Initialize();
 #endif
 
+  llvm::Error error = Socket::Initialize();
+  if (error)
+    return error;
+
   return llvm::Error::success();
 }
 
@@ -128,6 +133,8 @@
 
   ObjectContainerUniversalMachO::Terminate();
 
+  Socket::Terminate();
+
 #if defined(_MSC_VER)
   ProcessWindowsLog::Terminate();
 #endif
Index: source/Plugins/Platform/Windows/PlatformWindows.cpp
===================================================================
--- source/Plugins/Platform/Windows/PlatformWindows.cpp
+++ source/Plugins/Platform/Windows/PlatformWindows.cpp
@@ -125,8 +125,6 @@
 
   if (g_initialize_count++ == 0) {
 #if defined(_WIN32)
-    WSADATA dummy;
-    WSAStartup(MAKEWORD(2, 2), &dummy);
     // Force a host flag to true for the default platform object.
     PlatformSP default_platform_sp(new PlatformWindows(true));
     default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
@@ -142,9 +140,6 @@
 void PlatformWindows::Terminate(void) {
   if (g_initialize_count > 0) {
     if (--g_initialize_count == 0) {
-#ifdef _WIN32
-      WSACleanup();
-#endif
       PluginManager::UnregisterPlugin(PlatformWindows::CreateInstance);
     }
   }
Index: unittests/Host/MainLoopTest.cpp
===================================================================
--- unittests/Host/MainLoopTest.cpp
+++ unittests/Host/MainLoopTest.cpp
@@ -19,16 +19,11 @@
 class MainLoopTest : public testing::Test {
 public:
   static void SetUpTestCase() {
-#ifdef _MSC_VER
-    WSADATA data;
-    ASSERT_EQ(0, WSAStartup(MAKEWORD(2, 2), &data));
-#endif
+    ASSERT_TRUE(!Socket::Initialize().operator bool());
   }
 
   static void TearDownTestCase() {
-#ifdef _MSC_VER
-    ASSERT_EQ(0, WSACleanup());
-#endif
+    Socket::Terminate();
   }
 
   void SetUp() override {
Index: unittests/Host/SocketAddressTest.cpp
===================================================================
--- unittests/Host/SocketAddressTest.cpp
+++ unittests/Host/SocketAddressTest.cpp
@@ -8,27 +8,23 @@
 
 #include "gtest/gtest.h"
 
+#include "lldb/Host/Socket.h"
 #include "lldb/Host/SocketAddress.h"
 
+using namespace lldb_private;
+
 namespace {
 class SocketAddressTest : public testing::Test {
 public:
   static void SetUpTestCase() {
-#ifdef _MSC_VER
-    WSADATA data;
-    ASSERT_EQ(0, WSAStartup(MAKEWORD(2, 2), &data));
-#endif
+    ASSERT_TRUE(!Socket::Initialize().operator bool());
   }
   static void TearDownTestCase() {
-#ifdef _MSC_VER
-    ASSERT_EQ(0, WSACleanup());
-#endif
+    Socket::Terminate();
   }
 };
 } // namespace
 
-using namespace lldb_private;
-
 TEST_F(SocketAddressTest, Set) {
   SocketAddress sa;
   ASSERT_TRUE(sa.SetToLocalhost(AF_INET, 1138));
Index: unittests/Host/SocketTest.cpp
===================================================================
--- unittests/Host/SocketTest.cpp
+++ unittests/Host/SocketTest.cpp
@@ -28,16 +28,11 @@
 class SocketTest : public testing::Test {
 public:
   void SetUp() override {
-#if defined(_MSC_VER)
-    WSADATA data;
-    ::WSAStartup(MAKEWORD(2, 2), &data);
-#endif
+    ASSERT_TRUE(!Socket::Initialize().operator bool());
   }
 
   void TearDown() override {
-#if defined(_MSC_VER)
-    ::WSACleanup();
-#endif
+    Socket::Terminate();
   }
 
 protected:
Index: unittests/Process/gdb-remote/GDBRemoteTestUtils.cpp
===================================================================
--- unittests/Process/gdb-remote/GDBRemoteTestUtils.cpp
+++ unittests/Process/gdb-remote/GDBRemoteTestUtils.cpp
@@ -7,26 +7,17 @@
 //===----------------------------------------------------------------------===//
 
 #include "GDBRemoteTestUtils.h"
-
-#if defined(_MSC_VER)
-#include "lldb/Host/windows/windows.h"
-#include <WinSock2.h>
-#endif
+#include "lldb/Host/Socket.h"
 
 namespace lldb_private {
 namespace process_gdb_remote {
 
 void GDBRemoteTest::SetUpTestCase() {
-#if defined(_MSC_VER)
-  WSADATA data;
-  ::WSAStartup(MAKEWORD(2, 2), &data);
-#endif
+  ASSERT_TRUE(!Socket::Initialize().operator bool());
 }
 
 void GDBRemoteTest::TearDownTestCase() {
-#if defined(_MSC_VER)
-  ::WSACleanup();
-#endif
+  Socket::Terminate();
 }
 
 } // namespace process_gdb_remote