diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 129b5aaaf..e4937ce06 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -2,6 +2,12 @@ name: Linux CI
 
 on: [pull_request]
 
+# Every time you make a push to your PR, it cancel immediately the previous checks, 
+# and start a new one. The other runner will be available more quickly to your PR. 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: ${{ matrix.name }} ${{ matrix.build_type }}
diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 3fa3c15dd..541701836 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -2,6 +2,12 @@ name: macOS CI
 
 on: [pull_request]
 
+# Every time you make a push to your PR, it cancel immediately the previous checks, 
+# and start a new one. The other runner will be available more quickly to your PR. 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: ${{ matrix.name }} ${{ matrix.build_type }}
diff --git a/.github/workflows/build-python.yml b/.github/workflows/build-python.yml
index f09d589dc..ca4645a77 100644
--- a/.github/workflows/build-python.yml
+++ b/.github/workflows/build-python.yml
@@ -2,6 +2,12 @@ name: Python CI
 
 on: [pull_request]
 
+# Every time you make a push to your PR, it cancel immediately the previous checks, 
+# and start a new one. The other runner will be available more quickly to your PR. 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: ${{ matrix.name }} ${{ matrix.build_type }} Python ${{ matrix.python_version }}
diff --git a/.github/workflows/build-special.yml b/.github/workflows/build-special.yml
index f72dadbae..72466ffd6 100644
--- a/.github/workflows/build-special.yml
+++ b/.github/workflows/build-special.yml
@@ -2,6 +2,12 @@ name: Special Cases CI
 
 on: [pull_request]
 
+# Every time you make a push to your PR, it cancel immediately the previous checks, 
+# and start a new one. The other runner will be available more quickly to your PR. 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: ${{ matrix.name }} ${{ matrix.build_type }}
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index e85064d08..5d5342f3f 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -2,6 +2,12 @@ name: Windows CI
 
 on: [pull_request]
 
+# Every time you make a push to your PR, it cancel immediately the previous checks, 
+# and start a new one. The other runner will be available more quickly to your PR. 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: ${{ matrix.name }} ${{ matrix.build_type }}
@@ -16,19 +22,15 @@ jobs:
       BOOST_EXE: boost_1_72_0-msvc-14.2
 
     strategy:
-      fail-fast: true
+      fail-fast: false
       matrix:
-        # Github Actions requires a single row to be added to the build matrix.
-        # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
-        name: [
-            windows-2019-cl,
-          ]
-
-        build_type: [
-            Debug,
-            Release
-          ]
-        build_unstable: [ON]
+        build_type: 
+          - Debug
+          - Release
+          
+        build_unstable: 
+          - ON
+          # - OFF 
         include:
           - name: windows-2019-cl
             os: windows-2019
@@ -87,10 +89,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
+      - name: Setup msbuild
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: x${{ matrix.platform }}
+
       - name: Configuration
         run: |
           cmake -E remove_directory build
-          cmake -B build -S . -DGTSAM_BUILD_EXAMPLES_ALWAYS=OFF -DBOOST_ROOT="${env:BOOST_ROOT}" -DBOOST_INCLUDEDIR="${env:BOOST_ROOT}\boost\include" -DBOOST_LIBRARYDIR="${env:BOOST_ROOT}\lib"
+          cmake -G Ninja -B build -S . -DGTSAM_BUILD_EXAMPLES_ALWAYS=OFF -DBOOST_ROOT="${env:BOOST_ROOT}" -DBOOST_INCLUDEDIR="${env:BOOST_ROOT}\boost\include" -DBOOST_LIBRARYDIR="${env:BOOST_ROOT}\lib"
 
       - name: Build
         run: |
diff --git a/gtsam/basis/Basis.h b/gtsam/basis/Basis.h
index 41cdeeaaa..0b2b3606b 100644
--- a/gtsam/basis/Basis.h
+++ b/gtsam/basis/Basis.h
@@ -80,7 +80,7 @@ using Weights = Eigen::Matrix<double, 1, -1>; /* 1xN vector */
  *
  * @ingroup basis
  */
-Matrix kroneckerProductIdentity(size_t M, const Weights& w);
+Matrix GTSAM_EXPORT kroneckerProductIdentity(size_t M, const Weights& w);
 
 /**
  * CRTP Base class for function bases
diff --git a/gtsam/discrete/SignatureParser.h b/gtsam/discrete/SignatureParser.h
index e6b402e44..fec3b9af2 100644
--- a/gtsam/discrete/SignatureParser.h
+++ b/gtsam/discrete/SignatureParser.h
@@ -21,6 +21,7 @@
 #include <optional>
 #include <string>
 #include <vector>
+#include <gtsam/dllexport.h>
 
 namespace gtsam {
 /**
@@ -47,7 +48,7 @@ namespace gtsam {
  *
  * Also fails if the rows are not of the same size.
  */
-struct SignatureParser {
+struct GTSAM_EXPORT SignatureParser {
   using Row = std::vector<double>;
   using Table = std::vector<Row>;
 
diff --git a/gtsam/geometry/Pose2.h b/gtsam/geometry/Pose2.h
index 1a62fa938..aad81493f 100644
--- a/gtsam/geometry/Pose2.h
+++ b/gtsam/geometry/Pose2.h
@@ -198,9 +198,9 @@ public:
   static Matrix3 LogmapDerivative(const Pose2& v);
 
   // Chart at origin, depends on compile-time flag SLOW_BUT_CORRECT_EXPMAP
-  struct ChartAtOrigin {
-	static Pose2 Retract(const Vector3& v, ChartJacobian H = {});
-	static Vector3 Local(const Pose2& r, ChartJacobian H = {});
+  struct GTSAM_EXPORT ChartAtOrigin {
+    static Pose2 Retract(const Vector3& v, ChartJacobian H = {});
+    static Vector3 Local(const Pose2& r, ChartJacobian H = {});
   };
 
   using LieGroup<Pose2, 3>::inverse; // version with derivative
diff --git a/gtsam/geometry/Pose3.h b/gtsam/geometry/Pose3.h
index 6c91d7468..8a807cc23 100644
--- a/gtsam/geometry/Pose3.h
+++ b/gtsam/geometry/Pose3.h
@@ -204,7 +204,7 @@ public:
   static Matrix6 LogmapDerivative(const Pose3& xi);
 
   // Chart at origin, depends on compile-time flag GTSAM_POSE3_EXPMAP
-  struct ChartAtOrigin {
+  struct GTSAM_EXPORT ChartAtOrigin {
     static Pose3 Retract(const Vector6& xi, ChartJacobian Hxi = {});
     static Vector6 Local(const Pose3& pose, ChartJacobian Hpose = {});
   };