diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index eaee837..bf04ac5 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -546,6 +546,7 @@
 
         if os.name == 'nt':
             _init_non_posix(_CONFIG_VARS)
+            _CONFIG_VARS['TZPATH'] = ''
         if os.name == 'posix':
             _init_posix(_CONFIG_VARS)
         # For backward compatibility, see issue19555