diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index b9a96fe7..962f9928 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -3,66 +3,38 @@ name: Windows build
 on:
   workflow_dispatch:
   push:
-    branches: [ "master", "fixes" ]
+    branches: [ "master", "fixes", "develop" ]
     tags: [ "v[0-9]+.*" ]
   pull_request:
-    branches: [ "master", "fixes" ]
+    branches: [ "master", "fixes", "develop" ]
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   BUILD_TYPE: Release
 
 jobs:
-
-  cjson:
-    runs-on: windows-2022
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          repository: DaveGamble/cJSON
-          ref: v1.7.15
-
-      - name: Configure CMake cJSON
-        run: cmake -B ${{github.workspace}}/build64 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENABLE_CJSON_TEST=OFF -DBUILD_SHARED_LIBS=OFF -DBUILD_SHARED_AND_STATIC_LIBS=OFF -DCJSON_BUILD_SHARED_LIBS=OFF -DCJSON_OVERRIDE_BUILD_SHARED_LIBS=OFF -DCMAKE_GENERATOR_PLATFORM=x64
-
-      - name: Build cJSON
-        run: cmake --build ${{github.workspace}}/build64 --config ${{env.BUILD_TYPE}}
-
-      - name: Install cJSON
-        run: cmake --install ${{github.workspace}}/build64 --config ${{env.BUILD_TYPE}}
-
-      - name: Upload cJSON
-        uses: actions/upload-artifact@v3
-        with:
-          name: cjson-bin
-          path: C:\Program Files\cJSON
-
   mosquitto:
     runs-on: windows-2022
-    needs:
-      - cjson
-    env:
-      CJSON_DIR: C:\Program Files\cJSON
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - name: install openssl
-        run: choco install openssl
 
-      - name: Download cJSON
-        uses: actions/download-artifact@v3
+      - name: vcpkg build
+        uses: johnwason/vcpkg-action@v6
+        id: vcpkg
         with:
-          name: cjson-bin
-          path: C:\Program Files\cJSON
+          manifest-dir: ${{ github.workspace }}
+          triplet: x64-windows-release
+          token: ${{ github.token }}
+          github-binarycache: true
 
       - name: Configure CMake
-        run: cmake -B ${{github.workspace}}/build64 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DWITH_TESTS=OFF -DCMAKE_GENERATOR_PLATFORM=x64 -DCJSON_INCLUDE_DIR="C:/Program Files/cJSON/include" -DCJSON_LIBRARY="C:/Program Files/cJSON/lib/cjson.lib"
-
+        run: cmake -B ${{github.workspace}}/build64 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DWITH_TESTS=OFF -DCMAKE_GENERATOR_PLATFORM=x64 -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-release -DVCPKG_MANIFEST_MODE=ON
       - name: Build
         run: cmake --build ${{github.workspace}}/build64 --config ${{env.BUILD_TYPE}}
 
-      - uses: suisei-cn/actions-download-file@v1.0.1
+      - uses: suisei-cn/actions-download-file@v1.6.0
         id: vcredist
         name: Download VC redistributable
         with:
@@ -70,12 +42,12 @@ jobs:
           target: ${{github.workspace}}/installer/
 
       - name: Installer
-        uses: joncloud/makensis-action@v3.7
+        uses: joncloud/makensis-action@v4
         with:
-          script-file: ${{github.workspace}}/installer/mosquitto.nsi
+          script-file: ${{github.workspace}}/installer/mosquitto64.nsi
 
       - name: Upload installer to artifacts
-        uses: actions/upload-artifact/@v2
+        uses: actions/upload-artifact@v4
         with:
           name: installer
           path: ${{ github.workspace }}/installer/mosquitto*.exe
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 088e9a92..e275b7f6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,25 +66,9 @@ option(WITH_PIC "Build the static library with PIC (Position Independent Code) e
 option(WITH_THREADING "Include client library threading support?" ON)
 if (WITH_THREADING)
 	add_definitions("-DWITH_THREADING")
-	if (WIN32)
-		find_package(Threads REQUIRED)
-		set (PTHREAD_LIBRARIES Threads::Threads)
-		set (PTHREAD_INCLUDE_DIR "")
-	elseif (ANDROID)
-		set (PTHREAD_LIBRARIES "")
-		set (PTHREAD_INCLUDE_DIR "")
-	else (WIN32)
-		find_library(LIBPTHREAD pthread)
-		if (LIBPTHREAD)
-			set (PTHREAD_LIBRARIES pthread)
-		else (LIBPTHREAD)
-			set (PTHREAD_LIBRARIES "")
-		endif()
-		set (PTHREAD_INCLUDE_DIR "")
-	endif (WIN32)
-else (WITH_THREADING)
-	set (PTHREAD_LIBRARIES "")
-	set (PTHREAD_INCLUDE_DIR "")
+	if(WIN32)
+		find_package(Pthreads4W REQUIRED)
+	endif()
 endif (WITH_THREADING)
 
 option(WITH_DLT "Include DLT support?" OFF)
diff --git a/ChangeLog.txt b/ChangeLog.txt
index a3ab2ebe..78d48216 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -5,6 +5,9 @@ Broker:
 - Fix assert failure when loading a persistence file that contains
   subscriptions with no client id.
 
+Build:
+- Thread support is re-enabled on Windows.
+
 
 2.0.18 - 2023-09-18
 ===================
diff --git a/installer/mosquitto64.nsi b/installer/mosquitto64.nsi
index 7c9a544b..f6ab610c 100644
--- a/installer/mosquitto64.nsi
+++ b/installer/mosquitto64.nsi
@@ -59,12 +59,15 @@ Section "Files" SecInstall
 	File "..\README.md"
 	File "..\README-windows.txt"
 	File "..\README-letsencrypt.md"
-	;File "C:\pthreads\Pre-built.2\dll\x64\pthreadVC2.dll"
-	File "C:\OpenSSL-Win64\bin\libssl-1_1-x64.dll"
-	File "C:\OpenSSL-Win64\bin\libcrypto-1_1-x64.dll"
+	File "..\SECURITY.md"
 	File "..\edl-v10"
 	File "..\epl-v20"
 
+	File "..\build64\vcpkg_installed\x64-windows-release\bin\cjson.dll"
+	File "..\build64\vcpkg_installed\x64-windows-release\bin\libcrypto-3-x64.dll"
+	File "..\build64\vcpkg_installed\x64-windows-release\bin\libssl-3-x64.dll"
+	File "..\build64\vcpkg_installed\x64-windows-release\bin\pthreadVC3.dll"
+
 	SetOutPath "$INSTDIR\devel"
 	File "..\build64\lib\Release\mosquitto.lib"
 	File "..\build64\lib\cpp\Release\mosquittopp.lib"
@@ -88,42 +91,51 @@ Section "Files" SecInstall
 	SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
 SectionEnd
 
+Section "Visual Studio Runtime"
+  SetOutPath "$INSTDIR"
+  File "VC_redist.x64.exe"
+  ExecWait '"$INSTDIR\VC_redist.x64.exe" /quiet /norestart'
+  Delete "$INSTDIR\VC_redist.x64.exe"
+SectionEnd
+
 Section "Service" SecService
 	ExecWait '"$INSTDIR\mosquitto.exe" install'
 SectionEnd
 
 Section "Uninstall"
 	ExecWait '"$INSTDIR\mosquitto.exe" uninstall'
+	Delete "$INSTDIR\mosquitto.dll"
 	Delete "$INSTDIR\mosquitto.exe"
 	Delete "$INSTDIR\mosquitto_ctrl.exe"
 	Delete "$INSTDIR\mosquitto_passwd.exe"
 	Delete "$INSTDIR\mosquitto_pub.exe"
-	Delete "$INSTDIR\mosquitto_sub.exe"
 	Delete "$INSTDIR\mosquitto_rr.exe"
-	Delete "$INSTDIR\mosquitto.dll"
+	Delete "$INSTDIR\mosquitto_sub.exe"
 	Delete "$INSTDIR\mosquittopp.dll"
 	Delete "$INSTDIR\mosquitto_dynamic_security.dll"
 	Delete "$INSTDIR\aclfile.example"
 	Delete "$INSTDIR\ChangeLog.txt"
 	Delete "$INSTDIR\mosquitto.conf"
 	Delete "$INSTDIR\pwfile.example"
+	Delete "$INSTDIR\NOTICE.md"
 	Delete "$INSTDIR\README.md"
 	Delete "$INSTDIR\README-windows.txt"
 	Delete "$INSTDIR\README-letsencrypt.md"
-	;Delete "$INSTDIR\pthreadVC2.dll"
-	Delete "$INSTDIR\libssl-1_1-x64.dll"
-	Delete "$INSTDIR\libcrypto-1_1-x64.dll"
+	Delete "$INSTDIR\SECURITY.md"
 	Delete "$INSTDIR\edl-v10"
 	Delete "$INSTDIR\epl-v20"
 
+	Delete "$INSTDIR\cjson.dll"
+	Delete "$INSTDIR\libcrypto-3-x64.dll"
+	Delete "$INSTDIR\libssl-3-x64.dll"
+	Delete "$INSTDIR\pthreadVC3.dll"
+
 	Delete "$INSTDIR\devel\mosquitto.h"
-	Delete "$INSTDIR\devel\mosquitto.lib"
 	Delete "$INSTDIR\devel\mosquitto_broker.h"
 	Delete "$INSTDIR\devel\mosquitto_plugin.h"
-	Delete "$INSTDIR\devel\mosquitto_plugin.h"
 	Delete "$INSTDIR\devel\mosquittopp.h"
-	Delete "$INSTDIR\devel\mosquittopp.lib"
 	Delete "$INSTDIR\devel\mqtt_protocol.h"
+	RMDir "$INSTDIR\devel\mosquitto"
 	RMDir "$INSTDIR\devel"
 
 	Delete "$INSTDIR\Uninstall.exe"
@@ -141,4 +153,3 @@ LangString DESC_SecService ${LANG_ENGLISH} "Install mosquitto as a Windows servi
 	!insertmacro MUI_DESCRIPTION_TEXT ${SecInstall} $(DESC_SecInstall)
 	!insertmacro MUI_DESCRIPTION_TEXT ${SecService} $(DESC_SecService)
 !insertmacro MUI_FUNCTION_DESCRIPTION_END
-
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index f0f71132..de53e8bd 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -5,8 +5,8 @@ endif (WITH_LIB_CPP)
 
 include_directories(${mosquitto_SOURCE_DIR} ${mosquitto_SOURCE_DIR}/lib
 			${mosquitto_SOURCE_DIR}/include
-			${STDBOOL_H_PATH} ${STDINT_H_PATH}
-			${OPENSSL_INCLUDE_DIR} ${PTHREAD_INCLUDE_DIR})
+			${STDBOOL_H_PATH} ${STDINT_H_PATH})
+
 link_directories(${mosquitto_SOURCE_DIR}/lib)
 
 if (WITH_BUNDLED_DEPS)
@@ -59,7 +59,7 @@ set(C_SRC
 	util_mosq.c util_topic.c util_mosq.h
 	will_mosq.c will_mosq.h)
 
-set (LIBRARIES ${OPENSSL_LIBRARIES} ${PTHREAD_LIBRARIES})
+set (LIBRARIES ${OPENSSL_LIBRARIES})
 
 if (UNIX AND NOT APPLE AND NOT ANDROID)
 	find_library(LIBRT rt)
@@ -88,7 +88,18 @@ set_target_properties(libmosquitto PROPERTIES
 	POSITION_INDEPENDENT_CODE 1
 )
 
-target_link_libraries(libmosquitto ${LIBRARIES})
+target_link_libraries(libmosquitto PRIVATE ${LIBRARIES})
+
+if (WITH_THREADING)
+	if(WIN32)
+		 target_link_libraries(libmosquitto PRIVATE PThreads4W::PThreads4W)
+	else()
+		set(THREADS_PREFER_PTHREAD_FLAG ON)
+		find_package(Threads REQUIRED)
+
+		target_link_libraries(libmosquitto PRIVATE Threads::Threads)
+	endif()
+endif()
 
 set_target_properties(libmosquitto PROPERTIES
 	OUTPUT_NAME mosquitto
diff --git a/man/CMakeLists.txt b/man/CMakeLists.txt
index 79b419a0..8badb8c2 100644
--- a/man/CMakeLists.txt
+++ b/man/CMakeLists.txt
@@ -5,7 +5,7 @@
 # because the install is optional.
 
 find_program(XSLTPROC xsltproc OPTIONAL)
-if(XSLTPROC)
+if(XSLTPROC AND NOT WIN32)
 	function(compile_manpage page)
 		add_custom_command(OUTPUT ${PROJECT_SOURCE_DIR}/man/${page}
 			COMMAND xsltproc ${PROJECT_SOURCE_DIR}/man/${page}.xml -o ${PROJECT_SOURCE_DIR}/man/
diff --git a/set-version.sh b/set-version.sh
index b0a179d3..563accef 100755
--- a/set-version.sh
+++ b/set-version.sh
@@ -15,3 +15,5 @@ sed -i "s/^set (VERSION .*)/set (VERSION ${MAJOR}.${MINOR}.${REVISION})/" CMakeL
 sed -i "s/^!define VERSION .*/!define VERSION ${MAJOR}.${MINOR}.${REVISION}/" installer/*.nsi
 
 sed -i "s/^version: .*/version: ${MAJOR}.${MINOR}.${REVISION}/" snap/snapcraft.yaml
+
+sed -i "s/\"version-string\": \".*\",/\"version-string\": \"${MAJOR}.${MINOR}.${REVISION}\",/ vcpkg.json
diff --git a/vcpkg.json b/vcpkg.json
new file mode 100644
index 00000000..27a73d08
--- /dev/null
+++ b/vcpkg.json
@@ -0,0 +1,9 @@
+{
+  "name": "mosquitto",
+  "version-string": "2.0.18",
+  "dependencies": [
+    "cjson",
+	"openssl",
+	"pthreads"
+  ]
+}