diff --git a/.github/workflows/build_nix.yml b/.github/workflows/build_nix.yml
index 6126cd330..4c0720832 100644
--- a/.github/workflows/build_nix.yml
+++ b/.github/workflows/build_nix.yml
@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        python-version: ['3.7', '3.9', '3.10'] # '3.8' has "'tp_print' is deprecated [-Werror,-Wdeprecated-declarations]"
+        python-version: ['3.7', '3.9', '3.10', '3.11'] # '3.8' has "'tp_print' is deprecated [-Werror,-Wdeprecated-declarations]"
 
     steps:
     - uses: actions/checkout@v2
diff --git a/.github/workflows/build_win.yml b/.github/workflows/build_win.yml
index b874d553e..02f9e873d 100644
--- a/.github/workflows/build_win.yml
+++ b/.github/workflows/build_win.yml
@@ -11,6 +11,7 @@ env:
   TICK_DEBUG: 0
   TICK_WERROR: 0
   MKN_CL_PREFERRED: 1
+  MKN_COMPILE_THREADS: 2
 
 jobs:
   build:
@@ -21,10 +22,10 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        python-version: ['3.7'] # '3.8', '3.9', '3.10',  have dll init issues
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         submodules: true
 
diff --git a/lib/mkn.yaml b/lib/mkn.yaml
index b2946533d..b94115212 100644
--- a/lib/mkn.yaml
+++ b/lib/mkn.yaml
@@ -21,7 +21,7 @@ property:
     lib_path: ./../tick
     cargs: -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION
            -D_FILE_OFFSET_BITS=64 -DPYTHON_LINK -DNDEBUG
-    win_cargs: -GL -MD -EHsc -DBUILDING_DLL -std:c++11
+    win_cargs: -GL -MD -EHsc -DBUILDING_DLL
     nixish_cargs: -fwrapv -O2 -Wall
                   -fstack-protector-strong
                   -Wformat -Werror -Wdate-time
@@ -53,7 +53,7 @@ profile:
     if_link:
       nix_lib: ${nix_largs}
       bsd_lib: ${bsd_largs}
-      win: -nodefaultlib:libucrt.lib ucrt.lib -MANIFEST:EMBED,ID=2 -MANIFESTUAC:NO -LTCG
+      win: -LTCG # -nodefaultlib:libucrt.lib ucrt.lib -MANIFEST:EMBED,ID=2 -MANIFESTUAC:NO
 
   - name: base
     parent: arg
diff --git a/lib/swig/tick/array/array_module.i b/lib/swig/tick/array/array_module.i
index 86e81f270..617e99b41 100644
--- a/lib/swig/tick/array/array_module.i
+++ b/lib/swig/tick/array/array_module.i
@@ -10,12 +10,14 @@
 #include "numpy/arrayobject.h"
 #include "numpy/npy_math.h"
 
+#ifndef _WIN32
 // initialize python and numpy
 int tick_import_numpy(){
   Py_Initialize();
   return _import_array();
 }
 static const int tick_numpy_import = tick_import_numpy();
+#endif
 
 #include "tick/base/debug.h"
 #include "tick/array/carray_python.h"
diff --git a/sh/configure_env.sh b/sh/configure_env.sh
index 29a02a206..44e8a2f2a 100755
--- a/sh/configure_env.sh
+++ b/sh/configure_env.sh
@@ -17,7 +17,7 @@
 #
 ######################################################################
 
-set -ex
+set -e
 
 echo "Entering configure_env.sh"
 
@@ -329,7 +329,7 @@ MKN=${MKN:-mkn}
 export MKN_LIB_LINK_LIB=1
 export TICK_CONFIGURED=1
 
-echo "Finished configure_env.sh for python (${PYVER}.${PYVER_MIN}) with the following args"
+echo "Finished configure_env.sh for python (${PYVER}) with the following args"
 echo "LDARGS = ${LDARGS}"
 echo ""
 ##
diff --git a/sh/mkn.sh b/sh/mkn.sh
index bef11cab0..1a4dbaca5 100755
--- a/sh/mkn.sh
+++ b/sh/mkn.sh
@@ -25,7 +25,7 @@ pushd $CWD/.. 2>&1 > /dev/null
 ROOT=$PWD
 popd 2>&1 > /dev/null
 
-source $ROOT/sh/configure_env.sh
+source $CWD/configure_env.sh
 
 COMPILE=1
 LINK=1
diff --git a/tick/base/tests/base_test.py b/tick/base/tests/base_test.py
index eaaec8a30..7338259ef 100644
--- a/tick/base/tests/base_test.py
+++ b/tick/base/tests/base_test.py
@@ -1,6 +1,7 @@
 # License: BSD 3 clause
 
 # -*- coding: utf8 -*-
+import sys
 import unittest
 
 from tick.base import Base
@@ -471,7 +472,10 @@ def test_getter_only_native_property(self):
         def frop(x):
             self.a0.readonly_prop = x
 
-        self.assertRaisesRegex(AttributeError, "can't set attribute", frop, 45)
+        msg = "can't set attribute"
+        if sys.version_info[1] == 11:
+            msg = "property 'readonly_prop' of 'A0' object has no setter"
+        self.assertRaisesRegex(AttributeError, msg, frop, 45)
 
     def test_attributes_are_not_shared(self):
         """...Test that two instances of the same class do not share any