diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 9558f6861..fb6178299 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -12,12 +12,12 @@ env:
   SECRET_RESULTS_SHEET_ID: ${{ secrets.RESULTS_SHEET_ID }}
 jobs:
   build_and_test:
-    name: '${{ matrix.os }}: build and test (install mdns: ${{ matrix.install_mdns }}, use conan: ${{ matrix.use_conan }}, force cpprest asio: ${{ matrix.force_cpprest_asio }}, dns-sd mode: ${{ matrix.dns_sd_mode}}, enable_authorization: ${{ matrix.enable_authorization }})'
+    name: "${{ matrix.os }}: build and test (C++ standard: ${{ matrix.cxx_standard || 'minimum' }}, install mdns: ${{ matrix.install_mdns }}, use conan: ${{ matrix.use_conan }}, force cpprest asio: ${{ matrix.force_cpprest_asio }}, dns-sd mode: ${{ matrix.dns_sd_mode}}, enable_authorization: ${{ matrix.enable_authorization }})"
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-24.04, windows-2022]
+        os: [ubuntu-22.04, ubuntu-24.04, windows-2025]
         install_mdns: [false, true]
         use_conan: [true]
         force_cpprest_asio: [false, true]
@@ -25,10 +25,10 @@ jobs:
         enable_authorization: [false, true]
         exclude:
           # install_mdns is only meaningful on Linux
-          - os: windows-2022
+          - os: windows-2025
             install_mdns: true
           # for now, unicast DNS-SD tests are only implemented on Linux
-          - os: windows-2022
+          - os: windows-2025
             dns_sd_mode: unicast
           - os: ubuntu-22.04
             enable_authorization: false
@@ -45,12 +45,28 @@ jobs:
             install_mdns: true
           - os: ubuntu-24.04
             dns_sd_mode: unicast
-            # don't force ASIO for ubuntu platforms
+          # don't force ASIO for ubuntu platforms
           - os: ubuntu-24.04
             force_cpprest_asio: true
-          
+        include:
+          # exercise std::filesystem on VS 2026; regular windows-2025 jobs use the minimum standard
+          - os: windows-2025
+            install_mdns: false
+            use_conan: true
+            force_cpprest_asio: false
+            dns_sd_mode: multicast
+            enable_authorization: true
+            cxx_standard: 17
+          # keep one VS 2022 job while validating VS 2026 on windows-2025
+          - os: windows-2022
+            install_mdns: false
+            use_conan: true
+            force_cpprest_asio: false
+            dns_sd_mode: multicast
+            enable_authorization: true
+
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: set environment variables
       shell: bash
@@ -61,16 +77,21 @@ jobs:
           authorization_mode=noauth
         fi
 
+        if [[ -n "${{ matrix.cxx_standard }}" ]]; then
+          cxx_standard_suffix="_cxx${{ matrix.cxx_standard }}"
+          echo "CMAKE_EXTRA_ARGS=${{ env.CMAKE_EXTRA_ARGS }} -DCMAKE_CXX_STANDARD=${{ matrix.cxx_standard }}" >> $GITHUB_ENV
+        fi
+
         if [[ "${{ runner.os }}"  == "Linux" ]]; then
           if [[ "${{ matrix.install_mdns }}" == "true" ]]; then
-            echo "BUILD_NAME=${{ matrix.os }}_mdns_${{ matrix.dns_sd_mode }}_$authorization_mode" >> $GITHUB_ENV
+            echo "BUILD_NAME=${{ matrix.os }}_mdns_${{ matrix.dns_sd_mode }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
           else
-            echo "BUILD_NAME=${{ matrix.os }}_avahi_${{ matrix.dns_sd_mode }}_$authorization_mode" >> $GITHUB_ENV
+            echo "BUILD_NAME=${{ matrix.os }}_avahi_${{ matrix.dns_sd_mode }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
           fi
         elif [[ "${{ matrix.force_cpprest_asio }}" == "true" ]]; then
-          echo "BUILD_NAME=${{ matrix.os }}_asio_$authorization_mode" >> $GITHUB_ENV
+          echo "BUILD_NAME=${{ matrix.os }}_asio_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
         else
-          echo "BUILD_NAME=${{ matrix.os }}_$authorization_mode" >> $GITHUB_ENV
+          echo "BUILD_NAME=${{ matrix.os }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
         fi
         GITHUB_COMMIT=`echo "${{ github.sha }}" | cut -c1-7`
         echo "GITHUB_COMMIT=$GITHUB_COMMIT" >> $GITHUB_ENV
@@ -101,13 +122,8 @@ jobs:
       run: |
         pip install conan~=2.20
 
-    - name: 'ubuntu-14.04: install cmake'
-      if: matrix.os == 'ubuntu-14.04'
-      uses: lukka/get-cmake@v3.24.2
-
     - name: install cmake
-      if: matrix.os != 'ubuntu-14.04'
-      uses: lukka/get-cmake@v3.28.3
+      uses: lukka/get-cmake@v4.4.0
 
     - name: setup bash path
       working-directory: ${{ env.GITHUB_WORKSPACE }}
@@ -122,7 +138,7 @@ jobs:
       run: |
         # set compiler to cl.exe to avoid building with gcc.
         echo "CMAKE_COMPILER_ARGS=-DCMAKE_C_COMPILER=cl.exe -DCMAKE_CXX_COMPILER=cl.exe" >> $env:GITHUB_ENV
-        # disable unused network interface (may not exist on windows-2022 runners)
+        # disable unused network interface (may not exist on Windows runners)
         $nat = Get-NetAdapter -Name 'vEthernet (nat)' -ErrorAction SilentlyContinue
         if ($nat) {
           netsh interface set interface name="vEthernet (nat)" admin=DISABLED
@@ -283,6 +299,18 @@ jobs:
       run: |
         echo "CONAN_INSTALL_EXTRA_ARGS=--options\;cpprestsdk/*:http_client_impl=asio\;--options\;cpprestsdk/*:http_listener_impl=asio" >> $GITHUB_ENV
 
+    # windows-2025 uses VS 2026 (MSVC 195). Conan Center prebuilts are built for
+    # MSVC 193/194; pin 194 so conan install downloads packages instead of building
+    # from source. Command-line -s overrides cmake-conan's auto-cmake profile (which
+    # would otherwise report 195). vs_version=18 is required when a package still
+    # builds from source: Conan maps compiler.version=194 → VS 17, which is not
+    # installed on this image. See actions/runner-images#14017.
+    - name: pin conan msvc 194 (windows-2025)
+      if: matrix.os == 'windows-2025' && matrix.use_conan == true
+      shell: bash
+      run: |
+        echo "CONAN_INSTALL_EXTRA_ARGS=${CONAN_INSTALL_EXTRA_ARGS:+$CONAN_INSTALL_EXTRA_ARGS\;}-s\;compiler.version=194\;-c\;tools.microsoft.msbuild:vs_version=18" >> $GITHUB_ENV
+
     - name: enable conan
       if: matrix.use_conan == true
       shell: bash
@@ -298,12 +326,16 @@ jobs:
       uses: ilammy/msvc-dev-cmd@v1
 
     - name: build
-      uses: lukka/run-cmake@v3.4
-      with:
-        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-        cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Development/CMakeLists.txt'
-        buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build/'
-        cmakeAppendedArgs: '-GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="${{ env.RUNNER_WORKSPACE }}/install" ${{ env.CMAKE_COMPILER_ARGS }} ${{ env.CMAKE_EXTRA_ARGS }}'
+      shell: bash
+      run: |
+        cmake -S "${{ env.GITHUB_WORKSPACE }}/Development" \
+          -B "${{ env.RUNNER_WORKSPACE }}/build" \
+          -GNinja \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_INSTALL_PREFIX="${{ env.RUNNER_WORKSPACE }}/install" \
+          ${{ env.CMAKE_COMPILER_ARGS }} \
+          ${{ env.CMAKE_EXTRA_ARGS }}
+        cmake --build "${{ env.RUNNER_WORKSPACE }}/build"
 
     - name: dump conan lockfile
       if: matrix.use_conan == true
@@ -323,12 +355,9 @@ jobs:
         ctest --output-on-failure ${{ env.CTEST_EXPECTED_FAILURES }}
 
     - name: install
-      uses: lukka/run-cmake@v3.4
-      with:
-        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-        cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Development/CMakeLists.txt'
-        buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build/'
-        buildWithCMakeArgs: '--target install'
+      shell: bash
+      run: |
+        cmake --build "${{ env.RUNNER_WORKSPACE }}/build" --target install
 
     - name: set install test environment variable
       shell: bash
@@ -338,18 +367,18 @@ jobs:
 
     - name: install test
       if: runner.os != 'macOS'
-      uses: lukka/run-cmake@v3.4
-      with:
-        cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-        cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Sandbox/my-nmos-node/CMakeLists.txt'
-        buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node/'
-        cmakeAppendedArgs: '-GNinja
-            -DCMAKE_BUILD_TYPE=Release
-            -DCMAKE_FIND_PACKAGE_PREFER_CONFIG="1"
-            -DCMAKE_MODULE_PATH="${{ env.CMAKE_WORKSPACE }}/build/conan"
-            -DCMAKE_PREFIX_PATH="${{ env.CMAKE_WORKSPACE }}/install"
-            -DCMAKE_INSTALL_PREFIX="${{ env.CMAKE_WORKSPACE }}/build/conan"
-            ${{ env.CMAKE_COMPILER_ARGS }}'
+      shell: bash
+      run: |
+        cmake -S "${{ env.GITHUB_WORKSPACE }}/Sandbox/my-nmos-node" \
+          -B "${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node" \
+          -GNinja \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_FIND_PACKAGE_PREFER_CONFIG=1 \
+          -DCMAKE_MODULE_PATH="${{ env.CMAKE_WORKSPACE }}/build/conan" \
+          -DCMAKE_PREFIX_PATH="${{ env.CMAKE_WORKSPACE }}/install" \
+          -DCMAKE_INSTALL_PREFIX="${{ env.CMAKE_WORKSPACE }}/build/conan" \
+          ${{ env.CMAKE_COMPILER_ARGS }}
+        cmake --build "${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node"
 
     - name: install test log
       if: runner.os != 'macOS'
@@ -574,12 +603,12 @@ jobs:
         export SHEET=https://docs.google.com/spreadsheets/d/${{ env.SECRET_RESULTS_SHEET_ID }}
         python nmos-testing/utilities/run-test-suites/gsheetsImport/resultsImporter.py --credentials ${{ env.GDRIVE_CREDENTIALS }} --sheet "$SHEET" --insert --json nmos-testing/results/${{ env.GITHUB_COMMIT }}-*.json || echo "upload failed"
 
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v7
       with:
         name: ${{ env.BUILD_NAME }}_badges
         path: ${{ runner.workspace }}/nmos-testing/badges
 
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v7
       with:
         name: ${{ env.BUILD_NAME }}_results
         path: ${{ runner.workspace }}/nmos-testing/results
@@ -590,7 +619,7 @@ jobs:
     needs: [build_and_test]
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: set environment variables
       shell: bash
@@ -600,7 +629,7 @@ jobs:
         echo "GITHUB_WORKSPACE=${{ github.workspace }}" >> $GITHUB_ENV
         echo "RUNNER_WORKSPACE=${{ runner.workspace }}" >> $GITHUB_ENV
 
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v7
       with:
         path: ${{ runner.workspace }}/artifacts
 
diff --git a/.github/workflows/src/build-setup.yml b/.github/workflows/src/build-setup.yml
index 34d27a658..61f63d02e 100644
--- a/.github/workflows/src/build-setup.yml
+++ b/.github/workflows/src/build-setup.yml
@@ -3,13 +3,8 @@
   run: |
     pip install conan~=2.20
 
-- name: 'ubuntu-14.04: install cmake'
-  if: matrix.os == 'ubuntu-14.04'
-  uses: lukka/get-cmake@v3.24.2
-
 - name: install cmake
-  if: matrix.os != 'ubuntu-14.04'
-  uses: lukka/get-cmake@v3.28.3
+  uses: lukka/get-cmake@v4.4.0
 
 - name: setup bash path
   working-directory: ${{ env.GITHUB_WORKSPACE }}
@@ -24,7 +19,7 @@
   run: |
     # set compiler to cl.exe to avoid building with gcc.
     echo "CMAKE_COMPILER_ARGS=-DCMAKE_C_COMPILER=cl.exe -DCMAKE_CXX_COMPILER=cl.exe" >> $env:GITHUB_ENV
-    # disable unused network interface (may not exist on windows-2022 runners)
+    # disable unused network interface (may not exist on Windows runners)
     $nat = Get-NetAdapter -Name 'vEthernet (nat)' -ErrorAction SilentlyContinue
     if ($nat) {
       netsh interface set interface name="vEthernet (nat)" admin=DISABLED
@@ -185,6 +180,18 @@
   run: |
     echo "CONAN_INSTALL_EXTRA_ARGS=--options\;cpprestsdk/*:http_client_impl=asio\;--options\;cpprestsdk/*:http_listener_impl=asio" >> $GITHUB_ENV
 
+# windows-2025 uses VS 2026 (MSVC 195). Conan Center prebuilts are built for
+# MSVC 193/194; pin 194 so conan install downloads packages instead of building
+# from source. Command-line -s overrides cmake-conan's auto-cmake profile (which
+# would otherwise report 195). vs_version=18 is required when a package still
+# builds from source: Conan maps compiler.version=194 → VS 17, which is not
+# installed on this image. See actions/runner-images#14017.
+- name: pin conan msvc 194 (windows-2025)
+  if: matrix.os == 'windows-2025' && matrix.use_conan == true
+  shell: bash
+  run: |
+    echo "CONAN_INSTALL_EXTRA_ARGS=${CONAN_INSTALL_EXTRA_ARGS:+$CONAN_INSTALL_EXTRA_ARGS\;}-s\;compiler.version=194\;-c\;tools.microsoft.msbuild:vs_version=18" >> $GITHUB_ENV
+
 - name: enable conan
   if: matrix.use_conan == true
   shell: bash
diff --git a/.github/workflows/src/build-test.yml b/.github/workflows/src/build-test.yml
index f919cce32..88560aa24 100644
--- a/.github/workflows/src/build-test.yml
+++ b/.github/workflows/src/build-test.yml
@@ -12,12 +12,12 @@ env:
   SECRET_RESULTS_SHEET_ID: ${{ secrets.RESULTS_SHEET_ID }}
 jobs:
   build_and_test:
-    name: '${{ matrix.os }}: build and test (install mdns: ${{ matrix.install_mdns }}, use conan: ${{ matrix.use_conan }}, force cpprest asio: ${{ matrix.force_cpprest_asio }}, dns-sd mode: ${{ matrix.dns_sd_mode}}, enable_authorization: ${{ matrix.enable_authorization }})'
+    name: "${{ matrix.os }}: build and test (C++ standard: ${{ matrix.cxx_standard || 'minimum' }}, install mdns: ${{ matrix.install_mdns }}, use conan: ${{ matrix.use_conan }}, force cpprest asio: ${{ matrix.force_cpprest_asio }}, dns-sd mode: ${{ matrix.dns_sd_mode}}, enable_authorization: ${{ matrix.enable_authorization }})"
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-24.04, windows-2022]
+        os: [ubuntu-22.04, ubuntu-24.04, windows-2025]
         install_mdns: [false, true]
         use_conan: [true]
         force_cpprest_asio: [false, true]
@@ -25,10 +25,10 @@ jobs:
         enable_authorization: [false, true]
         exclude:
           # install_mdns is only meaningful on Linux
-          - os: windows-2022
+          - os: windows-2025
             install_mdns: true
           # for now, unicast DNS-SD tests are only implemented on Linux
-          - os: windows-2022
+          - os: windows-2025
             dns_sd_mode: unicast
           - os: ubuntu-22.04
             enable_authorization: false
@@ -45,12 +45,28 @@ jobs:
             install_mdns: true
           - os: ubuntu-24.04
             dns_sd_mode: unicast
-            # don't force ASIO for ubuntu platforms
+          # don't force ASIO for ubuntu platforms
           - os: ubuntu-24.04
             force_cpprest_asio: true
-          
+        include:
+          # exercise std::filesystem on VS 2026; regular windows-2025 jobs use the minimum standard
+          - os: windows-2025
+            install_mdns: false
+            use_conan: true
+            force_cpprest_asio: false
+            dns_sd_mode: multicast
+            enable_authorization: true
+            cxx_standard: 17
+          # keep one VS 2022 job while validating VS 2026 on windows-2025
+          - os: windows-2022
+            install_mdns: false
+            use_conan: true
+            force_cpprest_asio: false
+            dns_sd_mode: multicast
+            enable_authorization: true
+
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: set environment variables
       shell: bash
@@ -61,16 +77,21 @@ jobs:
           authorization_mode=noauth
         fi
 
+        if [[ -n "${{ matrix.cxx_standard }}" ]]; then
+          cxx_standard_suffix="_cxx${{ matrix.cxx_standard }}"
+          echo "CMAKE_EXTRA_ARGS=${{ env.CMAKE_EXTRA_ARGS }} -DCMAKE_CXX_STANDARD=${{ matrix.cxx_standard }}" >> $GITHUB_ENV
+        fi
+
         if [[ "${{ runner.os }}"  == "Linux" ]]; then
           if [[ "${{ matrix.install_mdns }}" == "true" ]]; then
-            echo "BUILD_NAME=${{ matrix.os }}_mdns_${{ matrix.dns_sd_mode }}_$authorization_mode" >> $GITHUB_ENV
+            echo "BUILD_NAME=${{ matrix.os }}_mdns_${{ matrix.dns_sd_mode }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
           else
-            echo "BUILD_NAME=${{ matrix.os }}_avahi_${{ matrix.dns_sd_mode }}_$authorization_mode" >> $GITHUB_ENV
+            echo "BUILD_NAME=${{ matrix.os }}_avahi_${{ matrix.dns_sd_mode }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
           fi
         elif [[ "${{ matrix.force_cpprest_asio }}" == "true" ]]; then
-          echo "BUILD_NAME=${{ matrix.os }}_asio_$authorization_mode" >> $GITHUB_ENV
+          echo "BUILD_NAME=${{ matrix.os }}_asio_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
         else
-          echo "BUILD_NAME=${{ matrix.os }}_$authorization_mode" >> $GITHUB_ENV
+          echo "BUILD_NAME=${{ matrix.os }}_$authorization_mode$cxx_standard_suffix" >> $GITHUB_ENV
         fi
         GITHUB_COMMIT=`echo "${{ github.sha }}" | cut -c1-7`
         echo "GITHUB_COMMIT=$GITHUB_COMMIT" >> $GITHUB_ENV
@@ -93,7 +114,7 @@ jobs:
     needs: [build_and_test]
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: set environment variables
       shell: bash
@@ -103,7 +124,7 @@ jobs:
         echo "GITHUB_WORKSPACE=${{ github.workspace }}" >> $GITHUB_ENV
         echo "RUNNER_WORKSPACE=${{ runner.workspace }}" >> $GITHUB_ENV
 
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v7
       with:
         path: ${{ runner.workspace }}/artifacts
 
diff --git a/.github/workflows/src/build.yml b/.github/workflows/src/build.yml
index 80b669d62..b6d0365fa 100644
--- a/.github/workflows/src/build.yml
+++ b/.github/workflows/src/build.yml
@@ -3,12 +3,16 @@
   uses: ilammy/msvc-dev-cmd@v1
 
 - name: build
-  uses: lukka/run-cmake@v3.4
-  with:
-    cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-    cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Development/CMakeLists.txt'
-    buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build/'
-    cmakeAppendedArgs: '-GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="${{ env.RUNNER_WORKSPACE }}/install" ${{ env.CMAKE_COMPILER_ARGS }} ${{ env.CMAKE_EXTRA_ARGS }}'
+  shell: bash
+  run: |
+    cmake -S "${{ env.GITHUB_WORKSPACE }}/Development" \
+      -B "${{ env.RUNNER_WORKSPACE }}/build" \
+      -GNinja \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_INSTALL_PREFIX="${{ env.RUNNER_WORKSPACE }}/install" \
+      ${{ env.CMAKE_COMPILER_ARGS }} \
+      ${{ env.CMAKE_EXTRA_ARGS }}
+    cmake --build "${{ env.RUNNER_WORKSPACE }}/build"
 
 - name: dump conan lockfile
   if: matrix.use_conan == true
diff --git a/.github/workflows/src/install-test.yml b/.github/workflows/src/install-test.yml
index 95926816b..8c4f8ed63 100644
--- a/.github/workflows/src/install-test.yml
+++ b/.github/workflows/src/install-test.yml
@@ -6,18 +6,18 @@
 
 - name: install test
   if: runner.os != 'macOS'
-  uses: lukka/run-cmake@v3.4
-  with:
-    cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-    cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Sandbox/my-nmos-node/CMakeLists.txt'
-    buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node/'
-    cmakeAppendedArgs: '-GNinja
-        -DCMAKE_BUILD_TYPE=Release
-        -DCMAKE_FIND_PACKAGE_PREFER_CONFIG="1"
-        -DCMAKE_MODULE_PATH="${{ env.CMAKE_WORKSPACE }}/build/conan"
-        -DCMAKE_PREFIX_PATH="${{ env.CMAKE_WORKSPACE }}/install"
-        -DCMAKE_INSTALL_PREFIX="${{ env.CMAKE_WORKSPACE }}/build/conan"
-        ${{ env.CMAKE_COMPILER_ARGS }}'
+  shell: bash
+  run: |
+    cmake -S "${{ env.GITHUB_WORKSPACE }}/Sandbox/my-nmos-node" \
+      -B "${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node" \
+      -GNinja \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_FIND_PACKAGE_PREFER_CONFIG=1 \
+      -DCMAKE_MODULE_PATH="${{ env.CMAKE_WORKSPACE }}/build/conan" \
+      -DCMAKE_PREFIX_PATH="${{ env.CMAKE_WORKSPACE }}/install" \
+      -DCMAKE_INSTALL_PREFIX="${{ env.CMAKE_WORKSPACE }}/build/conan" \
+      ${{ env.CMAKE_COMPILER_ARGS }}
+    cmake --build "${{ env.RUNNER_WORKSPACE }}/build-my-nmos-node"
 
 - name: install test log
   if: runner.os != 'macOS'
diff --git a/.github/workflows/src/install.yml b/.github/workflows/src/install.yml
index 35cda17b4..13843df32 100644
--- a/.github/workflows/src/install.yml
+++ b/.github/workflows/src/install.yml
@@ -1,7 +1,4 @@
 - name: install
-  uses: lukka/run-cmake@v3.4
-  with:
-    cmakeListsOrSettingsJson: CMakeListsTxtAdvanced
-    cmakeListsTxtPath: '${{ env.GITHUB_WORKSPACE }}/Development/CMakeLists.txt'
-    buildDirectory: '${{ env.RUNNER_WORKSPACE }}/build/'
-    buildWithCMakeArgs: '--target install'
+  shell: bash
+  run: |
+    cmake --build "${{ env.RUNNER_WORKSPACE }}/build" --target install
diff --git a/.github/workflows/src/save-results.yml b/.github/workflows/src/save-results.yml
index c4991df13..c44911488 100644
--- a/.github/workflows/src/save-results.yml
+++ b/.github/workflows/src/save-results.yml
@@ -6,12 +6,12 @@
     export SHEET=https://docs.google.com/spreadsheets/d/${{ env.SECRET_RESULTS_SHEET_ID }}
     python nmos-testing/utilities/run-test-suites/gsheetsImport/resultsImporter.py --credentials ${{ env.GDRIVE_CREDENTIALS }} --sheet "$SHEET" --insert --json nmos-testing/results/${{ env.GITHUB_COMMIT }}-*.json || echo "upload failed"
 
-- uses: actions/upload-artifact@v4
+- uses: actions/upload-artifact@v7
   with:
     name: ${{ env.BUILD_NAME }}_badges
     path: ${{ runner.workspace }}/nmos-testing/badges
 
-- uses: actions/upload-artifact@v4
+- uses: actions/upload-artifact@v7
   with:
     name: ${{ env.BUILD_NAME }}_results
     path: ${{ runner.workspace }}/nmos-testing/results
diff --git a/Development/bst/filesystem.h b/Development/bst/filesystem.h
index e5bcb7d94..fbdd803b7 100644
--- a/Development/bst/filesystem.h
+++ b/Development/bst/filesystem.h
@@ -15,24 +15,22 @@
 
 #elif defined(_MSC_VER)
 
-#if _MSC_VER >= 1951
-// From VS2026, or more precisely, MSVC Build Tools v14.51, <experimental/filesystem> is finally removed
-// See https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
-// and https://github.com/microsoft/STL/pull/5765
-#define BST_FILESYSTEM_STD
-#elif _MSC_VER >= 1910
 // From VS2017, /std:c++17 switch is introduced, but this is only indicated in __cplusplus if /Zc:__cplusplus is also specified
-#if __cplusplus >= 201703L
+// so use _MSVC_LANG instead
+#if defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
+// C++17
 #define BST_FILESYSTEM_STD
-#else
+#elif _MSC_VER >= 1951
+// From VS2026 / MSVC Build Tools v14.51, <experimental/filesystem> is removed
+// See https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
+// and https://github.com/microsoft/STL/pull/5765
+#define BST_FILESYSTEM_BOOST
+#elif _MSC_VER >= 1900
+// VS2015
 #define BST_FILESYSTEM_STD_EXPERIMENTAL
 #if _MSC_VER >= 1920
 #define _SILENCE_EXPERIMENTAL_FILESYSTEM_DEPRECATION_WARNING
 #endif
-#endif
-#elif _MSC_VER >= 1900
-// VS2015
-#define BST_FILESYSTEM_STD_EXPERIMENTAL
 #else
 // Earlier
 #define BST_FILESYSTEM_MICROSOFT_TR2
diff --git a/Development/cmake/NmosCppDependencies.cmake b/Development/cmake/NmosCppDependencies.cmake
index 5479a481a..6580f395d 100644
--- a/Development/cmake/NmosCppDependencies.cmake
+++ b/Development/cmake/NmosCppDependencies.cmake
@@ -1,7 +1,7 @@
 # Boost
 
 set(BOOST_VERSION_MIN "1.54.0")
-set(BOOST_VERSION_CUR "1.83.0")
+set(BOOST_VERSION_CUR "1.86.0")
 # note: 1.57.0 doesn't work due to https://svn.boost.org/trac10/ticket/10754
 # note: some components are only required for one platform or other
 # so find_package(Boost) is called after adding those components
@@ -12,12 +12,17 @@ if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Darwi
         # add filesystem (for bst/filesystem.h, used by nmos/filesystem_route.cpp)
         list(APPEND FIND_BOOST_COMPONENTS filesystem)
     endif()
+elseif(MSVC AND MSVC_VERSION GREATER_EQUAL 1951 AND (NOT CMAKE_CXX_STANDARD OR CMAKE_CXX_STANDARD LESS 17))
+    # MSVC 14.51 removed <experimental/filesystem>, so C++11/14 builds use Boost.Filesystem
+    list(APPEND FIND_BOOST_COMPONENTS filesystem)
 endif()
 # since std::shared_mutex is not available until C++17
 # see bst/shared_mutex.h
 list(APPEND FIND_BOOST_COMPONENTS thread)
-find_package(Boost ${BOOST_VERSION_MIN} REQUIRED COMPONENTS ${FIND_BOOST_COMPONENTS})
-# cope with historical versions of FindBoost.cmake
+# Prefer BoostConfig.cmake (CMake 3.30+ / CMP0167). Legacy FindBoost is removed
+# there; Config mode is what Conan CMakeDeps and modern Boost installs provide.
+find_package(Boost ${BOOST_VERSION_MIN} CONFIG REQUIRED COMPONENTS ${FIND_BOOST_COMPONENTS})
+# cope with historical versions of FindBoost.cmake / BoostConfig.cmake
 if(DEFINED Boost_VERSION_STRING)
     set(Boost_VERSION_COMPONENTS "${Boost_VERSION_STRING}")
 elseif(DEFINED Boost_VERSION_MAJOR)
diff --git a/Development/conanfile.py b/Development/conanfile.py
new file mode 100644
index 000000000..b5bd02f85
--- /dev/null
+++ b/Development/conanfile.py
@@ -0,0 +1,26 @@
+from conan import ConanFile
+
+
+class NmosCppConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeDeps"
+    # Conan Center recipes still pin older transitive deps (cpprestsdk → boost/1.83.0,
+    # json-schema-validator → nlohmann_json/3.11.3). Force the versions we want for the
+    # whole graph. Cap Boost at 1.86.0: 1.87 removed deprecated Asio APIs that unpatched
+    # websocketpp 0.8.2 (and our own Asio usage) still need. without_cobalt avoids
+    # packaging failures when Boost is built from source with OpenSSL present
+    # (conan-center-index#30414).
+    default_options = {
+        "boost/*:shared": False,
+        "boost/*:without_cobalt": True,
+    }
+
+    def requirements(self):
+        self.requires("boost/1.86.0", force=True)
+        self.requires("cpprestsdk/2.10.19")
+        self.requires("websocketpp/0.8.2")
+        self.requires("openssl/3.5.7")
+        self.requires("json-schema-validator/2.4.0")
+        self.requires("nlohmann_json/3.12.0", force=True)
+        self.requires("zlib/1.3.2")
+        self.requires("jwt-cpp/0.7.2")
diff --git a/Development/conanfile.txt b/Development/conanfile.txt
deleted file mode 100644
index cf66b3ee6..000000000
--- a/Development/conanfile.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-[requires]
-boost/1.83.0
-cpprestsdk/2.10.19
-websocketpp/0.8.2
-openssl/3.5.2
-json-schema-validator/2.3.0
-nlohmann_json/3.11.3
-zlib/1.3.1
-jwt-cpp/0.7.1
-
-[imports]
-bin, *.dll -> ./bin
-lib, *.so* -> ./lib
-lib, *.dylib* -> ./lib
-
-[options]
-boost/*:shared=False
-
-[generators]
-CMakeDeps
diff --git a/Documents/Dependencies.md b/Documents/Dependencies.md
index 52d8f2778..6643af26b 100644
--- a/Documents/Dependencies.md
+++ b/Documents/Dependencies.md
@@ -34,7 +34,8 @@ Specific instructions for [cross-compiling for Raspberry Pi](Raspberry-Pi.md) ar
 
 1. Download and install a recent [CMake stable release](https://cmake.org/download/#latest) for your platform
    Notes:
-   - Currently, CMake 3.24 or higher is required in order to use the Conan package manager; version 4.1.0 (latest release at the time) has been tested
+   - Currently, CMake 3.24 or higher is required in order to use the Conan package manager; version 4.4.0 has been tested
+     (CMake 4.2 or higher is required for the Visual Studio 18 2026 generator, but is not a hard project requirement)
    - Pre-built binary distributions are available for many platforms
    - On Linux distributions, e.g. Ubuntu 14.04 LTS (long-term support), the pre-built binary version available via ``apt-get`` may be too out-of-date
      Fetch, build and install a suitable version:
@@ -74,9 +75,12 @@ If using Conan, this section can be skipped.
 
 1. Download a [recent release](http://www.boost.org/users/download/)
    Notes:
-   - Several Boost releases have been tested, including Version 1.83.0 (latest release at the time) and Version 1.54.0
+   - Several Boost releases have been tested, including Version 1.86.0 and Version 1.54.0
+   - Boost 1.87+ is not yet supported: it removes deprecated Asio APIs still required by
+     WebSocket++ 0.8.2 (and some nmos-cpp Asio usage)
    - On Linux distributions, a Boost libraries package may already be installed, e.g. Ubuntu 14.04 LTS has Version 1.54.0
-2. Expand the archive so that, for example, the boost\_1\_83\_0 directory is at the same level as the nmos-cpp directory
+     (Ubuntu 14.04 is no longer exercised in CI)
+2. Expand the archive so that, for example, the boost\_1\_86\_0 directory is at the same level as the nmos-cpp directory
 3. Build and stage (or install) the following Boost libraries for your platform/toolset:
    - atomic
    - chrono
@@ -230,13 +234,13 @@ If using Conan, this section can be skipped.
 The C++ REST SDK depends on [OpenSSL](https://www.openssl.org/) (to implement secure HTTP and/or secure WebSockets).
 The nmos-cpp codebase also uses OpenSSL directly to implement the specific requirements of [AMWA BCP-003-01 Secure Communication in NMOS Systems](https://specs.amwa.tv/bcp-003-01/) and [AMWA BCP-003-02 Authorization in NMOS Systems](https://specs.amwa.tv/bcp-003-02/).
 
-OpenSSL version 3 is recommended, and version 3.5.2 (latest release at the time) has been tested.
+OpenSSL version 3 is recommended, and version 3.5.7 (latest 3.5 LTS release at the time) has been tested.
 It is currently also possible to use OpenSSL v1.1.1, although [this OpenSSL release is now end of life](https://www.openssl.org/blog/blog/2023/09/11/eol-111/index.html).
 
 1. Download and install a recent release
    Notes:
    - On Windows, an installer can be downloaded from [Shining Light Productions - Win32 OpenSSL](https://slproweb.com/products/Win32OpenSSL.html)
-     The Win64 OpenSSL v3.5.2 installer (latest release at the time) has been tested
+     The Win64 OpenSSL v3.5.7 installer (latest 3.5 LTS release at the time) has been tested
    - On Linux distributions, an OpenSSL package may already be available
      For example, Ubuntu 22.04 LTS includes OpenSSL v3.0.2
 
diff --git a/README.md b/README.md
index a09ba47ee..cf8093cab 100644
--- a/README.md
+++ b/README.md
@@ -73,9 +73,10 @@ The following configurations, defined by the [build-test](.github/workflows/src/
 | Linux    | Ubuntu 22.04 (GCC 11.2.0) | Avahi                              | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
 | Linux    | Ubuntu 22.04 (GCC 11.2.0) | Avahi                              | Secure Communications<br/>IS-10 Authorization<br/>Unicast DNS-SD   |
 | Linux    | Ubuntu 22.04 (GCC 11.2.0) | mDNSResponder                      | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
-| Windows  | Server 2022 (VS 2022)     | Bonjour (mDNSResponder), ASIO      | Secure Communications<br/>Multicast DNS-SD                         |
-| Windows  | Server 2022 (VS 2022)     | Bonjour (mDNSResponder), ASIO      | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
-| Windows  | Server 2022 (VS 2022)     | Bonjour (mDNSResponder), WinHTTP   | Secure Communications<br/>Multicast DNS-SD                         |
+| Windows  | Server 2025 (VS 2026)     | Bonjour (mDNSResponder), ASIO      | Secure Communications<br/>Multicast DNS-SD                         |
+| Windows  | Server 2025 (VS 2026)     | Bonjour (mDNSResponder), ASIO      | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
+| Windows  | Server 2025 (VS 2026)     | Bonjour (mDNSResponder), WinHTTP   | Secure Communications<br/>Multicast DNS-SD                         |
+| Windows  | Server 2025 (VS 2026)     | Bonjour (mDNSResponder), WinHTTP   | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
 | Windows  | Server 2022 (VS 2022)     | Bonjour (mDNSResponder), WinHTTP   | Secure Communications<br/>IS-10 Authorization<br/>Multicast DNS-SD |
 
 The [AMWA NMOS API Testing Tool](https://github.com/AMWA-TV/nmos-testing) is automatically run against the APIs of the **nmos-cpp-node** and **nmos-cpp-registry** applications.