diff --git a/.github/workflows/cmake-windows.yml b/.github/workflows/cmake-windows.yml
new file mode 100644
index 000000000..7d640b5d4
--- /dev/null
+++ b/.github/workflows/cmake-windows.yml
@@ -0,0 +1,40 @@
+name: CMake-windows
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Configure build for x86
+      uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: amd64_x86
+        
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}\build -G "NMake Makefiles" -DWIN32=ON;
+
+    - name: Build
+      working-directory: ${{github.workspace}}\build
+      # Build your program with the given configuration
+      run: nmake 
+
+    - name: Test
+      working-directory: ${{github.workspace}}\build
+      # Execute tests defined by the CMake configuration.
+      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+      run: ctest --rerun-failed --output-on-failure -C ${{env.BUILD_TYPE}}
diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 944cf0106..9d30a5131 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -17,7 +17,7 @@ jobs:
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     strategy:
       matrix:
-        os: [ ubuntu-latest, windows-latest, macos-latest ]
+        os: [ ubuntu-latest, macos-latest ]
     runs-on: ${{ matrix.os }}
 
     steps:
diff --git a/src/tls.c b/src/tls.c
index e800d818a..4ae04ab34 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -2320,7 +2320,13 @@ void tls_cleanup(TLS_CONNECT *conn)
 int tls_set_socket(TLS_CONNECT *conn, tls_socket_t sock)
 {
 	int flags;
-
+#ifdef WIN32
+    	if( ioctlsocket(sock, FIONBIO, &flags) != 0)   {
+		error_puts("socket in non-blocking mode");
+		//nginx will pass a socket in non-blocking mode
+		//return -1;
+	}
+#else
 	if ((flags = fcntl(sock, F_GETFL)) == -1) {
 		error_print();
 		perror("fcntl error");
@@ -2331,6 +2337,7 @@ int tls_set_socket(TLS_CONNECT *conn, tls_socket_t sock)
 		//nginx will pass a socket in non-blocking mode
 		//return -1;
 	}
+#endif
 	conn->sock = sock;
 	return 1;
 }
diff --git a/tests/sm9test.c b/tests/sm9test.c
index b8281dceb..be9d4686f 100644
--- a/tests/sm9test.c
+++ b/tests/sm9test.c
@@ -757,8 +757,8 @@ int test_sm9_z256_exchange()
 	uint8_t idA[5] = {0x41, 0x6C, 0x69, 0x63, 0x65};
 	uint8_t idB[3] = {0x42, 0x6F, 0x62};
 	size_t klen = 0x10;
-	uint8_t skA[200] = {}, skB[200] = {};
-
+	uint8_t skA[200];
+	uint8_t skB[200];
 	sm9_z256_from_hex(msk.ke, hex_kex);
 	sm9_z256_point_mul_generator(&(msk.Ppube), msk.ke);
 	if (sm9_exch_master_key_extract_key(&msk, (char *)idA, sizeof(idA), &keyA) < 0) goto err; ++j;
diff --git a/tools/tlcp_client.c b/tools/tlcp_client.c
index 6380ad4c7..24c1be26e 100644
--- a/tools/tlcp_client.c
+++ b/tools/tlcp_client.c
@@ -254,14 +254,21 @@ int tlcp_client_main(int argc, char *argv[])
 		FD_ZERO(&fds);
 		FD_SET(conn.sock, &fds);
 		if (read_stdin)
+#ifdef WIN32
+			FD_SET(_fileno, &fds);
+#else
 			FD_SET(STDIN_FILENO, &fds);
-
+#endif
 		if (select(conn.sock + 1, &fds, NULL, NULL, NULL) < 0) {
 			fprintf(stderr, "%s: select error\n", prog);
 			goto end;
 		}
 
+#ifdef WIN32
+		if (read_stdin && FD_ISSET(_fileno, &fds)) {
+#else
 		if (read_stdin && FD_ISSET(STDIN_FILENO, &fds)) {
+#endif
 
 			if (fgets(buf, sizeof(buf), stdin)) {
 				if (tls_send(&conn, (uint8_t *)buf, strlen(buf), &len) != 1) {