diff --git third_party/py/python_configure.bzl third_party/py/python_configure.bzl
--- third_party/py/python_configure.bzl
+++ third_party/py/python_configure.bzl
@@ -177,7 +177,7 @@ def _get_bash_bin(repository_ctx):
     if bash_bin != None:
         return bash_bin
     else:
-        bash_bin_path = repository_ctx.which("bash")
+        bash_bin_path = repository_ctx.which("bash" if not _is_windows(repository_ctx) else "sh.exe")
         if bash_bin_path != None:
             return str(bash_bin_path)
         else:
@@ -208,7 +208,7 @@ def _get_python_lib(repository_ctx, python_bin, lib_path_key):
         "    paths.append(path)\n" + "if len(paths) >=1:\n" +
         "  print(paths[0])\n" + "END"
     )
-    cmd = "%s - %s" % (python_bin, print_lib)
+    cmd = '"%s" - %s' % (python_bin, print_lib)
     result = repository_ctx.execute([_get_bash_bin(repository_ctx), "-c", cmd])
     return result.stdout.strip("\n")
 
@@ -293,11 +293,13 @@ def _create_single_version_package(
 
     python_bin = _get_python_bin(repository_ctx, bin_path_key, default_bin_path, allow_absent)
     if (python_bin == None or
-        _check_python_bin(repository_ctx,
-                          python_bin,
-                          bin_path_key,
-                          allow_absent) == None) and allow_absent:
-            python_include_rule = empty_include_rule
+        _check_python_bin(
+            repository_ctx,
+            python_bin,
+            bin_path_key,
+            allow_absent,
+        ) == None) and allow_absent:
+        python_include_rule = empty_include_rule
     else:
         python_lib = _get_python_lib(repository_ctx, python_bin, lib_path_key)
         _check_python_lib(repository_ctx, python_lib)
@@ -348,17 +350,17 @@ def _python_autoconf_impl(repository_ctx):
         repository_ctx,
         "_python2",
         _PYTHON2_BIN_PATH,
-        "python2",
+        "python" if not _is_windows(repository_ctx) else "python.exe",
         _PYTHON2_LIB_PATH,
-        True
+        True,
     )
     _create_single_version_package(
         repository_ctx,
         "_python3",
         _PYTHON3_BIN_PATH,
-        "python3",
+        "python3" if not _is_windows(repository_ctx) else "python.exe",
         _PYTHON3_LIB_PATH,
-        False
+        False,
     )
     _tpl(repository_ctx, "BUILD")
 
--