diff --git a/CMakeLists.txt b/CMakeLists.txt
index 380b3ea..dcf3f56 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,7 +68,7 @@ target_link_libraries(khiopsdriver_file_gcs PRIVATE google-cloud-cpp::storage
                                                     spdlog::spdlog)
 target_compile_options(
   khiopsdriver_file_gcs
-  PRIVATE $<$<CXX_COMPILER_ID:MSVC>:-Wall;/wd4101;/wd4710;/wd4711>
+  PRIVATE $<$<CXX_COMPILER_ID:MSVC>:-Wall;/wd4710;/wd4711;/wd4868>
   PRIVATE $<$<CXX_COMPILER_ID:AppleClang,Clang,GNU>:-Wall;-Wextra;-pedantic>)
 
 option(BUILD_TESTS "Build test programs" OFF)
diff --git a/src/gcsplugin.cpp b/src/gcsplugin.cpp
index 857f88d..f7a1cb1 100644
--- a/src/gcsplugin.cpp
+++ b/src/gcsplugin.cpp
@@ -269,7 +269,13 @@ std::string ToLower(const std::string &str) {
 
 std::string GetEnvironmentVariableOrDefault(const std::string &variable_name,
                                             const std::string &default_value) {
+#ifdef _WIN32
+  size_t len;
+  char value[2048];
+  getenv_s(&len, value, 2048, "TEMP");
+#else
   char *value = getenv(variable_name.c_str());
+#endif
 
   if (value && std::strlen(value) > 0) {
     return value;
diff --git a/test/drivertest.cpp b/test/drivertest.cpp
index 044d13c..5e492e7 100644
--- a/test/drivertest.cpp
+++ b/test/drivertest.cpp
@@ -125,8 +125,11 @@ int launch_test(const char *inputFilename, int nBufferSize) {
                  << boost::uuids::random_generator()() << "/output.txt";
   std::stringstream localOutput;
 #ifdef _WIN32
-  localOutput << std::getenv("TEMP") << "\\out-"
-              << boost::uuids::random_generator()() << ".txt";
+  size_t len;
+  char tempValue[2048];
+  getenv_s(&len, tempValue, 2048, "TEMP");
+  localOutput << tempValue << "\\out-" << boost::uuids::random_generator()()
+              << ".txt";
 #else
   localOutput << "/tmp/out-" << boost::uuids::random_generator()() << ".txt";
 #endif
@@ -333,9 +336,9 @@ int copyFileWithFseek(const char *file_name_input, const char *file_name_output,
     // Reads the file by steps of nBufferSize and writes to the output file at
     // each step
     char *buffer = new char[nBufferSize + 1]();
-    long long int sizeRead = nBufferSize;
-    long long int sizeWrite;
-    int cummulativeRead = 0;
+    long long sizeRead = nBufferSize;
+    long long sizeWrite;
+    long long cummulativeRead = 0;
     driver_fseek(fileinput, 0, SEEK_SET);
     while (sizeRead == nBufferSize && copy_status == kSuccess) {
       driver_fseek(fileinput, cummulativeRead, SEEK_SET);
diff --git a/test/path_helper.cpp b/test/path_helper.cpp
index 33d9eab..436a070 100644
--- a/test/path_helper.cpp
+++ b/test/path_helper.cpp
@@ -87,7 +87,7 @@ std::string getExecutableDir() {
 
 std::string dirname(std::string path) {
   char *pathBuffer = new char[path.length() + 1];
-  strcpy(pathBuffer, path.c_str());
+  strncpy(pathBuffer, path.c_str(), path.length() + 1);
   std::string pathDir = std::string(::dirname(pathBuffer));
   delete[] pathBuffer;
   return pathDir;