diff --git a/Jenkinsfile b/Jenkinsfile
index 7b7b65d029a4e302da01ac2c0221365c7a81dfe3..56227bf0dda449a279a7e5ad6ed2cd619c9bb450 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -114,6 +114,7 @@ def pre_test(){
 }
 def pre_test_win(){
     bat '''
+    taskkill /f /t /im python.exe
     cd C:\\
     rd /s /Q C:\\TDengine
     cd C:\\workspace\\TDinternal
@@ -180,9 +181,9 @@ def pre_test_win(){
     cd debug
     call "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\vcvarsall.bat" amd64
     cmake ../ -G "NMake Makefiles" 
-    nmake
-    nmake install 
-    xcopy /e/y/i/f C:\\workspace\\TDinternal\\debug\\build\\lib\\taos.dll C:\\Windows\\System32
+    nmake || exit 8
+    nmake install || exit 8
+    xcopy /e/y/i/f C:\\workspace\\TDinternal\\debug\\build\\lib\\taos.dll C:\\Windows\\System32 && exit 8
     cd C:\\workspace\\TDinternal\\community\\src\\connector\\python
     python -m pip install .
     
@@ -484,10 +485,12 @@ pipeline {
             
             catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                 pre_test_win()
+                timeout(time: 20, unit: 'MINUTES'){
                 bat'''
                 cd C:\\workspace\\TDinternal\\community\\tests\\pytest
                 .\\test-all.bat Wintest
                 '''
+                }
             }     
             script{
               win_stop=1
diff --git a/tests/pytest/crash_gen/valgrind_taos.supp b/tests/pytest/crash_gen/valgrind_taos.supp
index 6b3a04353d30b1109f40db2053d56122bd9df290..1ec87d91b9b54c35cf643962b60f7b95923b9ed3 100644
--- a/tests/pytest/crash_gen/valgrind_taos.supp
+++ b/tests/pytest/crash_gen/valgrind_taos.supp
@@ -18230,4 +18230,21 @@
    fun:__pyx_pw_5numpy_6random_13bit_generator_12BitGenerator_1__init__
    obj:/usr/bin/python3.8
    obj:/usr/bin/python3.8
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   obj:/usr/bin/python3.8
+   fun:_PyObject_MakeTpCall
+   fun:_PyEval_EvalFrameDefault
+   obj:/usr/bin/python3.8
+   fun:_PyObject_MakeTpCall
+   fun:_PyEval_EvalFrameDefault
+   obj:/usr/bin/python3.8
+   fun:_PyEval_EvalFrameDefault
+   obj:/usr/bin/python3.8
+   fun:_PyEval_EvalFrameDefault
+   fun:_PyEval_EvalCodeWithName
 }
\ No newline at end of file