diff --git a/.github/workflows/code-checker.yaml b/.github/workflows/code-checker.yaml
index 674a47bdd8..efe5c05320 100644
--- a/.github/workflows/code-checker.yaml
+++ b/.github/workflows/code-checker.yaml
@@ -110,4 +110,54 @@ jobs:
             mkdir -p /var/tmp/ccache
           fi
           brew install boost libomp ninja tbb ccache
-          make check-proto-product && make verifiers
\ No newline at end of file
+          make check-proto-product && make verifiers
+  mingw64:
+    name: ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - name: Code Checker MinGW
+          os: windows-2019
+    steps:
+      - name: Set git to use LF
+        run: |
+          git config --global core.autocrlf false
+          git config --global core.eol lf
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Cache go
+        uses: actions/cache@v2
+        with:
+          path: |
+            %LocalAppData%\go-build
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-
+      - name: Cache ccache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ${{ github.workspace }}/.ccache
+          key: ${{ runner.os }}-ccache-${{ hashFiles('internal/core/**') }}
+          restore-keys: ${{ runner.os }}-ccache-
+      - name: Configure Toolchain
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: mingw64
+      - name: Install Deps
+        shell: msys2 {0}
+        run: |
+          sh scripts/install_deps_msys.sh
+      - name: Code Check
+        shell: msys2 {0}
+        env:
+          CCACHE_COMPILERCHECK: content
+          CCACHE_COMPRESS: 1
+          CCACHE_COMPRESSLEVEL: 5
+          CCACHE_MAXSIZE: 2G
+          CCACHE_DIR: ${{ github.workspace }}/.ccache
+        run: |
+          mingw32-make verifiers build-go
diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index e5ceba67b9..e8e10edeaf 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -92,4 +92,3 @@ jobs:
           files: ./go_coverage.txt,./lcov_output.info
           name: ubuntu-${{ matrix.ubuntu }}-unittests
           fail_ci_if_error: true
-
diff --git a/Makefile b/Makefile
index 74e0c98476..9192b4ab3c 100644
--- a/Makefile
+++ b/Makefile
@@ -28,6 +28,10 @@ ifeq ($(OS),Darwin) # MacOS X
 	@echo "MacOS system identified. Switching to customized gorocksdb fork..."
 	@go mod edit -replace=github.com/tecbot/gorocksdb=github.com/soothing-rain/gorocksdb@v0.0.1
 endif
+ifeq ($(MSYSTEM), MINGW64) # MSYS
+	@echo "MSYS. Switching to customized gorocksdb fork..."
+	@go mod edit -replace=github.com/tecbot/gorocksdb=github.com/soothing-rain/gorocksdb@v0.0.1
+endif
 
 get-build-deps:
 	@(env bash $(PWD)/scripts/install_deps.sh)
diff --git a/cmd/milvus/milvus.go b/cmd/milvus/milvus.go
index f231a4661f..2480ff018b 100644
--- a/cmd/milvus/milvus.go
+++ b/cmd/milvus/milvus.go
@@ -8,9 +8,11 @@ import (
 	syslog "log"
 	"os"
 	"path"
+	"runtime"
 	"strings"
 	"syscall"
 
+	"github.com/gofrs/flock"
 	"github.com/milvus-io/milvus/cmd/roles"
 	"github.com/milvus-io/milvus/internal/util/paramtable"
 	"github.com/milvus-io/milvus/internal/util/typeutil"
@@ -90,7 +92,7 @@ func getPidFileName(serverType string, alias string) string {
 	return filename
 }
 
-func createPidFile(w io.Writer, filename string, runtimeDir string) (*os.File, error) {
+func createPidFile(w io.Writer, filename string, runtimeDir string) (*flock.Flock, error) {
 	fileFullName := path.Join(runtimeDir, filename)
 
 	fd, err := os.OpenFile(fileFullName, os.O_CREATE|os.O_RDWR, 0664)
@@ -99,11 +101,7 @@ func createPidFile(w io.Writer, filename string, runtimeDir string) (*os.File, e
 	}
 	fmt.Fprintln(w, "open pid file:", fileFullName)
 
-	err = syscall.Flock(int(fd.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
-	if err != nil {
-		return nil, fmt.Errorf("file %s is locked, error = %w", filename, err)
-	}
-	fmt.Fprintln(w, "lock pid file:", fileFullName)
+	defer fd.Close()
 
 	fd.Truncate(0)
 	_, err = fd.WriteString(fmt.Sprintf("%d", os.Getpid()))
@@ -111,16 +109,24 @@ func createPidFile(w io.Writer, filename string, runtimeDir string) (*os.File, e
 		return nil, fmt.Errorf("file %s write fail, error = %w", filename, err)
 	}
 
-	return fd, nil
+	lock := flock.New(fileFullName)
+	_, err = lock.TryLock()
+	if err != nil {
+		return nil, fmt.Errorf("file %s is locked, error = %w", filename, err)
+	}
+
+	fmt.Fprintln(w, "lock pid file:", fileFullName)
+	return lock, nil
 }
 
 func closePidFile(fd *os.File) {
 	fd.Close()
 }
 
-func removePidFile(fd *os.File) {
-	syscall.Close(int(fd.Fd()))
-	os.Remove(fd.Name())
+func removePidFile(lock *flock.Flock) {
+	filename := lock.Path()
+	lock.Close()
+	os.Remove(filename)
 }
 
 func stopPid(filename string, runtimeDir string) error {
@@ -182,6 +188,28 @@ func printUsage(w io.Writer, f *flag.Flag) {
 	fmt.Fprint(w, s, "\n")
 }
 
+// create runtime folder
+func createRuntimeDir() string {
+	runtimeDir := "/run/milvus"
+	if runtime.GOOS == "windows" {
+		runtimeDir = "run"
+		if err := makeRuntimeDir(runtimeDir); err != nil {
+			fmt.Fprintf(os.Stderr, "Create runtime directory at %s failed\n", runtimeDir)
+			os.Exit(-1)
+		}
+	} else {
+		if err := makeRuntimeDir(runtimeDir); err != nil {
+			fmt.Fprintf(os.Stderr, "Set runtime dir at %s failed, set it to /tmp/milvus directory\n", runtimeDir)
+			runtimeDir = "/tmp/milvus"
+			if err = makeRuntimeDir(runtimeDir); err != nil {
+				fmt.Fprintf(os.Stderr, "Create runtime directory at %s failed\n", runtimeDir)
+				os.Exit(-1)
+			}
+		}
+	}
+	return runtimeDir
+}
+
 func RunMilvus(args []string) {
 	if len(args) < 3 {
 		_, _ = fmt.Fprint(os.Stderr, "usage: milvus [command] [server type] [flags]\n")
@@ -283,36 +311,17 @@ func RunMilvus(args []string) {
 		params.SetLogger(0)
 	}
 
-	var runtimeDir string
-	// For embedded Milvus, runtime dir is always /run/milvus.
-	if serverType == typeutil.EmbeddedRole {
-		runtimeDir = "/tmp/milvus"
-	} else {
-		runtimeDir = "/run/milvus"
-	}
-	if err := makeRuntimeDir(runtimeDir); err != nil {
-		if serverType == typeutil.EmbeddedRole {
-			fmt.Fprintf(os.Stderr, "Create runtime directory at %s failed\n", runtimeDir)
-			os.Exit(-1)
-		}
-		fmt.Fprintf(os.Stderr, "Set runtime dir at %s failed, set it to /tmp/milvus directory\n", runtimeDir)
-		runtimeDir = "/tmp/milvus"
-		if err = makeRuntimeDir(runtimeDir); err != nil {
-			fmt.Fprintf(os.Stderr, "Create runtime directory at %s failed\n", runtimeDir)
-			os.Exit(-1)
-		}
-	}
-
+	runtimeDir := createRuntimeDir()
 	filename := getPidFileName(serverType, svrAlias)
 	switch command {
 	case "run":
 		printBanner(flags.Output())
 		injectVariablesToEnv()
-		fd, err := createPidFile(flags.Output(), filename, runtimeDir)
+		lock, err := createPidFile(flags.Output(), filename, runtimeDir)
 		if err != nil {
 			panic(err)
 		}
-		defer removePidFile(fd)
+		defer removePidFile(lock)
 		role.Run(local, svrAlias)
 	case "stop":
 		if err := stopPid(filename, runtimeDir); err != nil {
diff --git a/deployments/windows/cleanup_data.bat b/deployments/windows/cleanup_data.bat
new file mode 100644
index 0000000000..742512a18b
--- /dev/null
+++ b/deployments/windows/cleanup_data.bat
@@ -0,0 +1,4 @@
+cd /d %~dp0
+
+rmdir /s /q default.etcd s3data var
+del /q *.log
\ No newline at end of file
diff --git a/deployments/windows/run_etcd.bat b/deployments/windows/run_etcd.bat
new file mode 100644
index 0000000000..9a2f0eb9e3
--- /dev/null
+++ b/deployments/windows/run_etcd.bat
@@ -0,0 +1,2 @@
+cd /d %~dp0
+bin\etcd.exe
\ No newline at end of file
diff --git a/deployments/windows/run_milvus.bat b/deployments/windows/run_milvus.bat
new file mode 100644
index 0000000000..7bb36df4c6
--- /dev/null
+++ b/deployments/windows/run_milvus.bat
@@ -0,0 +1,2 @@
+cd /d %~dp0
+bin\milvus.exe run standalone
\ No newline at end of file
diff --git a/deployments/windows/run_minio.bat b/deployments/windows/run_minio.bat
new file mode 100644
index 0000000000..0c4991ac8e
--- /dev/null
+++ b/deployments/windows/run_minio.bat
@@ -0,0 +1,2 @@
+cd /d %~dp0
+bin\minio.exe server s3data
\ No newline at end of file
diff --git a/go.mod b/go.mod
index d181f31360..097562422e 100644
--- a/go.mod
+++ b/go.mod
@@ -15,6 +15,7 @@ require (
 	github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect
 	github.com/gin-gonic/gin v1.7.7
 	github.com/go-basic/ipv4 v1.0.0
+	github.com/gofrs/flock v0.8.1 // indirect
 	github.com/golang/mock v1.5.0
 	github.com/golang/protobuf v1.5.2
 	github.com/google/btree v1.0.1
diff --git a/go.sum b/go.sum
index d6fc4fb9be..a1b76f1a11 100644
--- a/go.sum
+++ b/go.sum
@@ -198,6 +198,8 @@ github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 h1:ZpnhV/YsD2/4cESfV5+
 github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2/go.mod h1:bBOAhwG1umN6/6ZUMtDFBMQR8jRg9O75tm9K00oMsK4=
 github.com/godbus/dbus/v5 v5.0.4 h1:9349emZab16e7zQvpmsbtjc18ykshndd8y2PG3sgJbA=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
+github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
diff --git a/internal/core/CMakeLists.txt b/internal/core/CMakeLists.txt
index 4cd9c4cb36..31773cedf8 100644
--- a/internal/core/CMakeLists.txt
+++ b/internal/core/CMakeLists.txt
@@ -54,6 +54,8 @@ if ( APPLE )
 elseif (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
     message(STATUS "==============Linux Environment===============")
     set(LINUX TRUE)
+elseif ( MSYS )
+    message( STATUS "==============MSYS Environment===============" )
 else ()
     message(FATAL_ERROR "Unsupported platform!" )
 endif ()
@@ -114,7 +116,7 @@ include( ThirdPartyPackages )
 # **************************** Compiler arguments ****************************
 message( STATUS "Building Milvus CPU version" )
 
-if (LINUX)
+if (LINUX OR MSYS)
 append_flags( CMAKE_CXX_FLAGS
               FLAGS
               "-fPIC"
diff --git a/internal/core/src/indexbuilder/CMakeLists.txt b/internal/core/src/indexbuilder/CMakeLists.txt
index 70d7533b35..01fcf2dc9d 100644
--- a/internal/core/src/indexbuilder/CMakeLists.txt
+++ b/internal/core/src/indexbuilder/CMakeLists.txt
@@ -22,7 +22,7 @@ add_library(milvus_indexbuilder SHARED
 find_library(TBB NAMES tbb)
 set(PLATFORM_LIBS dl)
 if (MSYS)
-set(PLATFORM_LIBS )
+set(PLATFORM_LIBS -Wl,--allow-multiple-definition)
 endif ()
 
 # link order matters
diff --git a/internal/core/src/indexbuilder/index_c.cpp b/internal/core/src/indexbuilder/index_c.cpp
index ab3ce135ba..b6d99d0e17 100644
--- a/internal/core/src/indexbuilder/index_c.cpp
+++ b/internal/core/src/indexbuilder/index_c.cpp
@@ -53,7 +53,7 @@ void
 DeleteIndex(CIndex index) {
     auto cIndex = (milvus::indexbuilder::IndexWrapper*)index;
     delete cIndex;
-#ifndef __APPLE__
+#ifdef __linux__
     malloc_trim(0);
 #endif
 }
diff --git a/internal/core/src/log/Log.cpp b/internal/core/src/log/Log.cpp
index 373f3744cd..800e201278 100644
--- a/internal/core/src/log/Log.cpp
+++ b/internal/core/src/log/Log.cpp
@@ -48,7 +48,7 @@ SetThreadName(const std::string& name) {
     // Note: the name cannot exceed 16 bytes
 #ifdef __APPLE__
     pthread_setname_np(name.c_str());
-#elif __linux__
+#elif defined(__linux__) || defined(__MINGW64__)
     pthread_setname_np(pthread_self(), name.c_str());
 #else
 #error "Unsupported SetThreadName";
diff --git a/internal/core/src/query/SearchBruteForce.cpp b/internal/core/src/query/SearchBruteForce.cpp
index f9113b372d..efb29a71f9 100644
--- a/internal/core/src/query/SearchBruteForce.cpp
+++ b/internal/core/src/query/SearchBruteForce.cpp
@@ -15,7 +15,7 @@
 #ifdef __APPLE__
 #include "knowhere/index/vector_index/impl/bruteforce/BruteForce.h"
 #include "knowhere/common/Heap.h"
-#elif __linux__
+#elif defined(__linux__) || defined(__MINGW64__)
 #include <faiss/utils/BinaryDistance.h>
 #include <faiss/utils/distances.h>
 #else
@@ -42,7 +42,7 @@ raw_search(MetricType metric_type,
            float* D,
            idx_t* labels,
            const BitsetView bitset) {
-#ifdef __linux__
+#if defined(__linux__) || defined(__MINGW64__)
     using namespace faiss;  // NOLINT
     if (metric_type == METRIC_Jaccard || metric_type == METRIC_Tanimoto) {
         float_maxheap_array_t res = {size_t(n), size_t(k), labels, D};
@@ -121,7 +121,7 @@ FloatSearchBruteForce(const dataset::SearchDataset& dataset,
                                             sub_qr.get_distances()};
         knowhere::knn_inner_product_sse(query_data, chunk_data, dim, num_queries, size_per_chunk, &buf, bitset);
     }
-#elif __linux__
+#elif defined(__linux__) || defined(__MINGW64__)
     if (metric_type == MetricType::METRIC_L2) {
         faiss::float_maxheap_array_t buf{(size_t)num_queries, (size_t)topk, sub_qr.get_ids(), sub_qr.get_distances()};
         faiss::knn_L2sqr(query_data, chunk_data, dim, num_queries, size_per_chunk, &buf, bitset);
diff --git a/internal/core/src/segcore/FieldIndexing.cpp b/internal/core/src/segcore/FieldIndexing.cpp
index d704807ed2..e1554a9295 100644
--- a/internal/core/src/segcore/FieldIndexing.cpp
+++ b/internal/core/src/segcore/FieldIndexing.cpp
@@ -13,7 +13,7 @@
 #include <thread>
 
 #include "common/SystemProperty.h"
-#ifdef __linux__
+#if defined(__linux__) || defined(__MINGW64__)
 #include "knowhere/index/vector_index/IndexIVF.h"
 #endif
 #include "knowhere/index/vector_index/adapter/VectorAdapter.h"
@@ -23,7 +23,7 @@ namespace milvus::segcore {
 
 void
 VectorFieldIndexing::BuildIndexRange(int64_t ack_beg, int64_t ack_end, const VectorBase* vec_base) {
-#ifdef __linux__
+#if defined(__linux__) || defined(__MINGW64__)
     AssertInfo(field_meta_.get_data_type() == DataType::VECTOR_FLOAT, "Data type of vector field is not VECTOR_FLOAT");
     auto dim = field_meta_.get_dim();
 
diff --git a/internal/core/src/segcore/collection_c.cpp b/internal/core/src/segcore/collection_c.cpp
index 019e72daf6..b3bd13e7a3 100644
--- a/internal/core/src/segcore/collection_c.cpp
+++ b/internal/core/src/segcore/collection_c.cpp
@@ -28,7 +28,7 @@ void
 DeleteCollection(CCollection collection) {
     auto col = (milvus::segcore::Collection*)collection;
     delete col;
-#ifndef __APPLE__
+#ifdef __linux__
     malloc_trim(0);
 #endif
 }
diff --git a/internal/core/thirdparty/knowhere/CMakeLists.txt b/internal/core/thirdparty/knowhere/CMakeLists.txt
index 38f7391aa4..04f2f45826 100644
--- a/internal/core/thirdparty/knowhere/CMakeLists.txt
+++ b/internal/core/thirdparty/knowhere/CMakeLists.txt
@@ -21,6 +21,13 @@ else ()
         "https://github.com/milvus-io/knowhere/archive/refs/tags/${KNOWHERE_VERSION}.tar.gz" )
 endif ()
 
+if (MSYS)
+    # TODO(matrixji) replace with official release after `support windows` merged/tagged
+    # windows adaptation + milvus-io/knowhere@v1.0.1
+    set (KNOWHERE_SOURCE_URL "https://github.com/matrixji/knowhere/archive/refs/tags/windows-int-20220310-p1.tar.gz")
+    set (KNOWHERE_SOURCE_MD5 "7a75cbaa68377f0c310e7f71bfd7becf")
+endif (MSYS)
+
 macro(build_knowhere)
     message(STATUS "Building knowhere-${KNOWHERE_VERSION} from source")
     set (KNOWHERE_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX})
@@ -55,6 +62,7 @@ macro(build_knowhere)
             PROPERTIES
                 IMPORTED_GLOBAL     TRUE
                 IMPORTED_LOCATION   ${INSTALL_DIR}/lib/${CMAKE_SHARED_LIBRARY_PREFIX}knowhere${CMAKE_SHARED_LIBRARY_SUFFIX}
+                IMPORTED_IMPLIB     ${INSTALL_DIR}/lib/${CMAKE_SHARED_LIBRARY_PREFIX}knowhere${CMAKE_SHARED_LIBRARY_SUFFIX}.a
                 INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/${CMAKE_INSTALL_INCLUDEDIR})
 
     add_dependencies(knowhere knowhere_ep)
diff --git a/internal/datacoord/server.go b/internal/datacoord/server.go
index 58acae3e9f..bbf620e687 100644
--- a/internal/datacoord/server.go
+++ b/internal/datacoord/server.go
@@ -21,6 +21,7 @@ import (
 	"errors"
 	"fmt"
 	"math/rand"
+	"os"
 	"sync"
 	"sync/atomic"
 	"syscall"
@@ -224,7 +225,9 @@ func (s *Server) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if s.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 	return nil
@@ -628,7 +631,9 @@ func (s *Server) watchService(ctx context.Context) {
 				logutil.Logger(s.ctx).Error("watch service channel closed", zap.Int64("serverID", s.session.ServerID))
 				go s.Stop()
 				if s.session.TriggerKill {
-					syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+					if p, err := os.FindProcess(os.Getpid()); err == nil {
+						p.Signal(syscall.SIGINT)
+					}
 				}
 				return
 			}
diff --git a/internal/datanode/data_node.go b/internal/datanode/data_node.go
index 51498ba271..16410f46b2 100644
--- a/internal/datanode/data_node.go
+++ b/internal/datanode/data_node.go
@@ -25,6 +25,7 @@ import (
 	"fmt"
 	"io"
 	"math/rand"
+	"os"
 	"path"
 	"strconv"
 	"strings"
@@ -185,7 +186,9 @@ func (node *DataNode) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if node.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 
diff --git a/internal/indexcoord/index_coord.go b/internal/indexcoord/index_coord.go
index f094679726..1779d55292 100644
--- a/internal/indexcoord/index_coord.go
+++ b/internal/indexcoord/index_coord.go
@@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"math/rand"
+	"os"
 	"sort"
 	"strconv"
 	"sync"
@@ -134,7 +135,9 @@ func (i *IndexCoord) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if i.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 	return nil
@@ -770,7 +773,9 @@ func (i *IndexCoord) watchNodeLoop() {
 				log.Error("Session Watcher channel closed", zap.Int64("server id", i.session.ServerID))
 				go i.Stop()
 				if i.session.TriggerKill {
-					syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+					if p, err := os.FindProcess(os.Getpid()); err == nil {
+						p.Signal(syscall.SIGINT)
+					}
 				}
 				return
 			}
diff --git a/internal/indexnode/index.go b/internal/indexnode/index.go
index ecfc90af86..6fbb2147e7 100644
--- a/internal/indexnode/index.go
+++ b/internal/indexnode/index.go
@@ -22,6 +22,7 @@ package indexnode
 
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_indexbuilder -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_indexbuilder -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_indexbuilder -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include <stdlib.h>	// free
 #include "segcore/collection_c.h"
diff --git a/internal/indexnode/indexnode.go b/internal/indexnode/indexnode.go
index d6727d6a63..978543299d 100644
--- a/internal/indexnode/indexnode.go
+++ b/internal/indexnode/indexnode.go
@@ -22,6 +22,7 @@ package indexnode
 
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_indexbuilder -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_indexbuilder -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_indexbuilder -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include <stdlib.h>
 #include "indexbuilder/init_c.h"
@@ -33,6 +34,7 @@ import (
 	"errors"
 	"io"
 	"math/rand"
+	"os"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -131,7 +133,9 @@ func (i *IndexNode) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if i.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 	return nil
diff --git a/internal/proxy/proxy.go b/internal/proxy/proxy.go
index 7083cc4721..aa91a773c7 100644
--- a/internal/proxy/proxy.go
+++ b/internal/proxy/proxy.go
@@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"math/rand"
+	"os"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -126,7 +127,9 @@ func (node *Proxy) Register() error {
 			log.Fatal("failed to stop server", zap.Error(err))
 		}
 		if node.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 	// TODO Reset the logger
diff --git a/internal/querycoord/query_coord.go b/internal/querycoord/query_coord.go
index aeebce6bfa..f848a308e9 100644
--- a/internal/querycoord/query_coord.go
+++ b/internal/querycoord/query_coord.go
@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"math"
 	"math/rand"
+	"os"
 	"sort"
 	"strconv"
 	"sync"
@@ -110,7 +111,9 @@ func (qc *QueryCoord) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if qc.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 	return nil
@@ -383,7 +386,9 @@ func (qc *QueryCoord) handleNodeEvent(ctx context.Context) {
 				log.Error("Session Watcher channel closed", zap.Int64("server id", qc.session.ServerID))
 				go qc.Stop()
 				if qc.session.TriggerKill {
-					syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+					if p, err := os.FindProcess(os.Getpid()); err == nil {
+						p.Signal(syscall.SIGINT)
+					}
 				}
 				return
 			}
diff --git a/internal/querynode/collection.go b/internal/querynode/collection.go
index 48c5199b79..468f416736 100644
--- a/internal/querynode/collection.go
+++ b/internal/querynode/collection.go
@@ -22,6 +22,7 @@ package querynode
 
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include "segcore/collection_c.h"
 #include "segcore/segment_c.h"
diff --git a/internal/querynode/load_index_info.go b/internal/querynode/load_index_info.go
index 8fe5dad049..411587b51a 100644
--- a/internal/querynode/load_index_info.go
+++ b/internal/querynode/load_index_info.go
@@ -20,6 +20,7 @@ package querynode
 #cgo CFLAGS: -I${SRCDIR}/../core/output/include
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_segcore -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_common -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include "segcore/load_index_c.h"
 #include "common/vector_index_c.h"
diff --git a/internal/querynode/plan.go b/internal/querynode/plan.go
index 6aceea7624..c7f0db213c 100644
--- a/internal/querynode/plan.go
+++ b/internal/querynode/plan.go
@@ -20,6 +20,7 @@ package querynode
 #cgo CFLAGS: -I${SRCDIR}/../core/output/include
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include "segcore/collection_c.h"
 #include "segcore/segment_c.h"
diff --git a/internal/querynode/query_node.go b/internal/querynode/query_node.go
index 6c7d2165b4..184f11882b 100644
--- a/internal/querynode/query_node.go
+++ b/internal/querynode/query_node.go
@@ -22,6 +22,7 @@ package querynode
 
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include "segcore/collection_c.h"
 #include "segcore/segment_c.h"
@@ -34,6 +35,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"os"
 	"path/filepath"
 	"strconv"
 	"sync"
@@ -156,7 +158,9 @@ func (node *QueryNode) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if node.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 
@@ -222,7 +226,9 @@ func (node *QueryNode) watchService(ctx context.Context) {
 				// need to call stop in separate goroutine
 				go node.Stop()
 				if node.session.TriggerKill {
-					syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+					if p, err := os.FindProcess(os.Getpid()); err == nil {
+						p.Signal(syscall.SIGINT)
+					}
 				}
 				return
 			}
diff --git a/internal/querynode/segment.go b/internal/querynode/segment.go
index 5800efae9b..5ea68e7ae7 100644
--- a/internal/querynode/segment.go
+++ b/internal/querynode/segment.go
@@ -21,6 +21,7 @@ package querynode
 
 #cgo darwin LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath,"${SRCDIR}/../core/output/lib"
 #cgo linux LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
+#cgo windows LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
 
 #include "segcore/collection_c.h"
 #include "segcore/plan_c.h"
diff --git a/internal/rootcoord/root_coord.go b/internal/rootcoord/root_coord.go
index 5f9bcb5928..42a227e73c 100644
--- a/internal/rootcoord/root_coord.go
+++ b/internal/rootcoord/root_coord.go
@@ -21,6 +21,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"math/rand"
+	"os"
 	"strconv"
 	"strings"
 	"sync"
@@ -926,7 +927,9 @@ func (c *Core) Register() error {
 		}
 		// manually send signal to starter goroutine
 		if c.session.TriggerKill {
-			syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+			if p, err := os.FindProcess(os.Getpid()); err == nil {
+				p.Signal(syscall.SIGINT)
+			}
 		}
 	})
 
diff --git a/internal/storage/cwrapper/CMakeLists.txt b/internal/storage/cwrapper/CMakeLists.txt
index 00c5cd59dd..1fb547e7b0 100644
--- a/internal/storage/cwrapper/CMakeLists.txt
+++ b/internal/storage/cwrapper/CMakeLists.txt
@@ -54,7 +54,6 @@ macro( build_arrow )
         "-DARROW_TEST_MEMCHECK=OFF"
         "-DARROW_BUILD_BENCHMARKS=OFF"
         "-DARROW_CUDA=OFF"
-        "-DARROW_JEMALLOC=ON"
         "-DARROW_PYTHON=OFF"
         "-DARROW_WITH_RE2=OFF"
         "-DARROW_BUILD_UTILITIES=OFF"
@@ -67,6 +66,11 @@ macro( build_arrow )
         "-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}"
         "-DCMAKE_INCLUDE_PATH=${Boost_INCLUDE_DIRS}"
         )
+    if (WIN32)
+        set( ARROW_CMAKE_ARGS ${ARROW_CMAKE_ARGS} "-DARROW_JEMALLOC=OFF" )
+    else ()
+        set( ARROW_CMAKE_ARGS ${ARROW_CMAKE_ARGS} "-DARROW_JEMALLOC=ON" )
+    endif ()
 
     ExternalProject_Add(
             arrow-ep
@@ -115,10 +119,10 @@ macro( build_arrow )
 endmacro()
 
 if (MSYS)
-    message("Using system arrow in msys")
-else ()
+    message(STATUS "Using arrow form system")
+else (MSYS)
     build_arrow()
-endif ()
+endif (MSYS)
 
 add_library(wrapper STATIC)
 target_sources(wrapper PUBLIC ParquetWrapper.cpp PayloadStream.cpp)
diff --git a/internal/storage/payload.go b/internal/storage/payload.go
index 0bb55e0b86..e1b5e69478 100644
--- a/internal/storage/payload.go
+++ b/internal/storage/payload.go
@@ -19,7 +19,9 @@ package storage
 /*
 #cgo CFLAGS: -I${SRCDIR}/cwrapper
 
-#cgo LDFLAGS: -L${SRCDIR}/cwrapper/output/lib -L${SRCDIR}/cwrapper/output/lib64 -lwrapper -lparquet -larrow -larrow_bundled_dependencies -lstdc++ -lm
+#cgo linux LDFLAGS: -L${SRCDIR}/cwrapper/output/lib -L${SRCDIR}/cwrapper/output/lib64 -lwrapper -lparquet -larrow -larrow_bundled_dependencies -lstdc++ -lm
+#cgo darwin LDFLAGS: -L${SRCDIR}/cwrapper/output/lib -lwrapper -lparquet -larrow -larrow_bundled_dependencies -lstdc++ -lm
+#cgo windows LDFLAGS: -L${SRCDIR}/cwrapper/output/lib -lwrapper -lparquet -larrow -lstdc++
 #include <stdlib.h>
 #include "ParquetWrapper.h"
 */
diff --git a/internal/storage/print_binlog.go b/internal/storage/print_binlog.go
index 0f72a3546a..98596a6be0 100644
--- a/internal/storage/print_binlog.go
+++ b/internal/storage/print_binlog.go
@@ -21,7 +21,8 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"syscall"
+
+	"golang.org/x/exp/mmap"
 
 	"github.com/golang/protobuf/proto"
 	"github.com/milvus-io/milvus/internal/proto/internalpb"
@@ -54,13 +55,14 @@ func printBinlogFile(filename string) error {
 
 	fmt.Printf("file size = %d\n", fileInfo.Size())
 
-	b, err := syscall.Mmap(int(fd.Fd()), 0, int(fileInfo.Size()), syscall.PROT_READ, syscall.MAP_SHARED)
+	at, err := mmap.Open(filename)
 	if err != nil {
 		return nil
 	}
-	defer syscall.Munmap(b)
+	defer at.Close()
 
-	fmt.Printf("buf size = %d\n", len(b))
+	b := make([]byte, fileInfo.Size())
+	at.ReadAt(b, 0)
 
 	r, err := NewBinlogReader(b)
 	if err != nil {
diff --git a/internal/util/cgoconverter/test_utils.go b/internal/util/cgoconverter/test_utils.go
index 86022423e0..ed7f251fc2 100644
--- a/internal/util/cgoconverter/test_utils.go
+++ b/internal/util/cgoconverter/test_utils.go
@@ -12,8 +12,8 @@ func copyToCBytes(data []byte) unsafe.Pointer {
 }
 
 func mallocCBytes(v byte, len int) unsafe.Pointer {
-	p := C.malloc(C.ulong(len))
-	C.memset(p, C.int(v), C.ulong(len))
+	p := C.malloc(C.size_t(len))
+	C.memset(p, C.int(v), C.size_t(len))
 
 	return p
 }
diff --git a/scripts/core_build.sh b/scripts/core_build.sh
index a544e76c62..b443c23ff4 100755
--- a/scripts/core_build.sh
+++ b/scripts/core_build.sh
@@ -136,6 +136,26 @@ if [[ ! -d ${BUILD_OUTPUT_DIR} ]]; then
   mkdir ${BUILD_OUTPUT_DIR}
 fi
 
+CMAKE_GENERATOR="Unix Makefiles"
+
+# MSYS system
+if [ "$MSYSTEM" == "MINGW64" ] ; then
+  BUILD_COVERAGE=OFF
+  PROFILING=OFF
+  GPU_VERSION=OFF
+  WITH_PROMETHEUS=OFF
+  CUDA_ARCH=OFF
+
+  # extra default cmake args for msys
+  CMAKE_GENERATOR="MSYS Makefiles"
+
+  # clang tools path
+  export CLANG_TOOLS_PATH=/mingw64/bin
+
+  # using system blas
+  export OpenBLAS_HOME="$(cygpath -w /mingw64)"
+fi
+
 pushd ${BUILD_OUTPUT_DIR}
 
 # Remove make cache since build.sh -l use default variables
@@ -164,6 +184,7 @@ esac
 
 
 CMAKE_CMD="cmake \
+${CMAKE_EXTRA_ARGS} \
 -DBUILD_UNIT_TEST=${BUILD_UNITTEST} \
 -DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX}
 -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
@@ -178,8 +199,9 @@ CMAKE_CMD="cmake \
 -DCUSTOM_THIRDPARTY_DOWNLOAD_PATH=${CUSTOM_THIRDPARTY_PATH} \
 -DEMBEDDED_MILVUS=${EMBEDDED_MILVUS} \
 ${CPP_SRC_DIR}"
+
 echo ${CMAKE_CMD}
-${CMAKE_CMD}
+${CMAKE_CMD} -G "${CMAKE_GENERATOR}"
 
 
 if [[ ${RUN_CPPLINT} == "ON" ]]; then
diff --git a/scripts/cwrapper_build.sh b/scripts/cwrapper_build.sh
index d5bcfc7b56..24bc4af9e6 100755
--- a/scripts/cwrapper_build.sh
+++ b/scripts/cwrapper_build.sh
@@ -70,19 +70,28 @@ done
 echo "BUILD_TYPE: " $BUILD_TYPE
 echo "CUSTOM_THIRDPARTY_PATH: " $CUSTOM_THIRDPARTY_PATH
 
+
+# MSYS system
+CMAKE_GENERATOR="Unix Makefiles"
+if [ "$MSYSTEM" == "MINGW64" ] ; then
+  CMAKE_GENERATOR="MSYS Makefiles"
+fi
+
 pushd ${CMAKE_BUILD}
 CMAKE_CMD="cmake \
+${CMAKE_EXTRA_ARGS} \
 -DCMAKE_INSTALL_PREFIX=${OUTPUT_LIB} \
 -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
 -DCUSTOM_THIRDPARTY_DOWNLOAD_PATH=${CUSTOM_THIRDPARTY_PATH} ${SRC_DIR}"
 
-${CMAKE_CMD}
+${CMAKE_CMD} -G "${CMAKE_GENERATOR}"
 echo ${CMAKE_CMD}
 
 if [[ ! ${jobs+1} ]]; then
   unameOut="$(uname -s)"
   case "${unameOut}" in
       Linux*)     jobs=$(nproc);;
+      MINGW64*)   jobs=$(nproc);;
       Darwin*)    jobs=$(sysctl -n hw.physicalcpu);;
       *)          echo "UNKNOWN:${unameOut}" ; exit 0;
   esac
diff --git a/scripts/cwrapper_rocksdb_build.sh b/scripts/cwrapper_rocksdb_build.sh
index b613f4fc57..aa1c7ef93c 100755
--- a/scripts/cwrapper_rocksdb_build.sh
+++ b/scripts/cwrapper_rocksdb_build.sh
@@ -70,9 +70,6 @@ CMAKE_CMD="cmake \
 -DCMAKE_INSTALL_PREFIX=${OUTPUT_LIB} \
 -DCUSTOM_THIRDPARTY_DOWNLOAD_PATH=${CUSTOM_THIRDPARTY_PATH} ${SRC_DIR}"
 
-${CMAKE_CMD}
-echo ${CMAKE_CMD}
-
 unameOut="$(uname -s)"
 if [[ ! ${jobs+1} ]]; then
   case "${unameOut}" in
@@ -82,7 +79,14 @@ if [[ ! ${jobs+1} ]]; then
   esac
 fi
 
-make -j ${jobs}
+
+if [ "$MSYSTEM" == "MINGW64" ] ; then
+  echo Using system rocksdb
+else
+  echo ${CMAKE_CMD}
+  ${CMAKE_CMD}
+  make -j ${jobs}
+fi
 
 go env -w CGO_CFLAGS="-I${OUTPUT_LIB}/include"
 ldflags=""
@@ -100,9 +104,15 @@ else
       esac
 fi
 
+if [ "$MSYSTEM" == "MINGW64" ] ; then
+  ldflags="-L${OUTPUT_LIB}/lib -lrocksdb -lstdc++ -lm -lz -lshlwapi -lrpcrt4"
+fi
+
+
 if [[ $(arch) == 'arm64' ]]; then
   go env -w GOARCH=arm64
 fi
 
 go env -w CGO_LDFLAGS="$ldflags" && GO111MODULE=on
+
 go get github.com/tecbot/gorocksdb
diff --git a/scripts/install_deps_msys.sh b/scripts/install_deps_msys.sh
new file mode 100644
index 0000000000..f4b38bfe66
--- /dev/null
+++ b/scripts/install_deps_msys.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+set -e
+
+if [[ "${MSYSTEM}" != "MINGW64" ]] ; then
+    echo non MINGW64, exit.
+    exit 1
+fi
+
+pacman -Su --noconfirm --needed \
+    git make tar dos2unix zip unzip patch \
+    mingw-w64-x86_64-toolchain \
+    mingw-w64-x86_64-make \
+    mingw-w64-x86_64-ccache \
+    mingw-w64-x86_64-cmake \
+    mingw-w64-x86_64-go \
+    mingw-w64-x86_64-boost \
+    mingw-w64-x86_64-intel-tbb \
+    mingw-w64-x86_64-openblas \
+    mingw-w64-x86_64-clang \
+    mingw-w64-x86_64-clang-tools-extra \
+    mingw-w64-x86_64-python2 \
+    mingw-w64-x86_64-diffutils \
+    mingw-w64-x86_64-arrow \
+    mingw-w64-x86_64-rocksdb
+
+
+# dummy empty dl, TODO: remove later
+touch a.c && \
+    gcc -c a.c && \
+    ar rc libdl.a a.o && \
+    ranlib libdl.a && \
+    cp -fr libdl.a /mingw64/lib && \
+    rm -fr a.c a.o libdl.a
+
diff --git a/scripts/package_windows.sh b/scripts/package_windows.sh
new file mode 100644
index 0000000000..102b665ce9
--- /dev/null
+++ b/scripts/package_windows.sh
@@ -0,0 +1,57 @@
+ETCD_VERSION=3.5.0
+
+set -xe
+
+date_str="$(date +%Y%m%d)"
+short_hash="$(git log -1 --pretty=%h)"
+
+version="${date_str}-${short_hash}"
+target_filename="milvus-windows-${version}.zip"
+
+script_dir="$(cd $(dirname $0); pwd)"
+repo_dir="$(dirname ${script_dir})"
+bin_dir="${repo_dir}/bin"
+package_dir="${repo_dir}/windows_package"
+
+
+# prepare package dir
+rm -fr ${package_dir}
+mkdir -p ${package_dir}
+cp -fr ${repo_dir}/deployments/windows ${package_dir}/milvus
+
+# resolve all dll for milvus.exe
+cd ${bin_dir}
+cp -fr milvus milvus.exe
+
+find ${repo_dir} -name \*.dll | xargs -I {} cp -frv {} . || :
+for x in $(ldd milvus.exe | awk '{print $1}') ; do
+  if [ -f ${MINGW_PREFIX}/bin/$x ] ; then
+    cp -frv ${MINGW_PREFIX}/bin/$x .
+  fi
+done
+
+# prepare package
+cd ${package_dir}
+mkdir -p milvus/{bin,configs,run}
+
+cp -frv ${bin_dir}/*.dll milvus/bin
+cp -frv ${bin_dir}/*.exe milvus/bin
+
+# configs
+cp -fr ${repo_dir}/configs/* milvus/configs/
+
+# patch config /var -> var
+sed s@/var/lib@var/lib@ -i milvus/configs/milvus.yaml
+
+# patch all bat with dos format
+find -name \*.bat | xargs -I {} unix2dos {}
+
+# download minio
+wget -q -O milvus/bin/minio.exe https://dl.min.io/server/minio/release/windows-amd64/minio.exe
+
+# download etcd
+wget -q -O etcd.zip https://github.com/etcd-io/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-windows-amd64.zip
+unzip etcd.zip
+find -name etcd.exe | xargs -I {} cp -frv {} milvus/bin
+
+zip -r ${target_filename} milvus