diff --git a/source/common/src/ttime.c b/source/common/src/ttime.c
index 227de7f5fc..cbe700fa2d 100644
--- a/source/common/src/ttime.c
+++ b/source/common/src/ttime.c
@@ -170,10 +170,14 @@ int32_t parseTimezone(char* str, int64_t* tzOffset) {
     hour = strnatoi(&str[i], len);
     i += len + 1;
   } else {
-    hour = strnatoi(&str[i], 2);
+    hour = strnatoi(&str[i], strlen(&str[i]));
     i += 2;
   }
 
+  if (hour > 12 || hour < 0) {
+    return -1;
+  }
+
   // return error if there're illegal charaters after min(2 Digits)
   char* minStr = &str[i];
   if (minStr[1] != '\0' && minStr[2] != '\0') {
diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index 15aca85fc2..39de117339 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -348,15 +348,15 @@ HANDLE taosOpenFileNotStream(const char *path, int32_t tdFileOptions) {
   if (h != INVALID_HANDLE_VALUE && (tdFileOptions & TD_FILE_APPEND) && (tdFileOptions & TD_FILE_WRITE)) {
     SetFilePointer(h, 0, NULL, FILE_END);
   }
-  if (h == INVALID_HANDLE_VALUE) {
-    DWORD dwError = GetLastError();
-    LPVOID lpMsgBuf;
-    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwError,
-                  0,
-                  (LPTSTR)&lpMsgBuf, 0, NULL);
-    printf("CreateFile failed with error %d: %s", dwError, (char*)lpMsgBuf);
-    LocalFree(lpMsgBuf);
-  }
+  // if (h == INVALID_HANDLE_VALUE) {
+  //   DWORD dwError = GetLastError();
+  //   LPVOID lpMsgBuf;
+  //   FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwError,
+  //                 0,
+  //                 (LPTSTR)&lpMsgBuf, 0, NULL);
+  //   printf("CreateFile failed with error %d: %s", dwError, (char*)lpMsgBuf);
+  //   LocalFree(lpMsgBuf);
+  // }
   return h;
 }
 
diff --git a/source/os/test/osTests.cpp b/source/os/test/osTests.cpp
index e2185aeac2..9ab58a180a 100644
--- a/source/os/test/osTests.cpp
+++ b/source/os/test/osTests.cpp
@@ -314,6 +314,6 @@ TEST(osTest, osFilePerformance) {
   printf("Test OpenForRead & Close file %d times, cost: %" PRId64 "us\n", TESTTIMES, OpenForReadCloseFileCost);
 }
 
-#endif OSFILE_PERFORMANCE_TEST
+#endif // OSFILE_PERFORMANCE_TEST
 
 #pragma GCC diagnostic pop