diff --git a/CMakeLists.txt b/CMakeLists.txt
old mode 100755
new mode 100644
diff --git a/dap_chain_net.c b/dap_chain_net.c
index 9fda000d9d70f7cc7cc1972b4bebf59770eda358..062b948090013417f0d2e30917081044be684bc3 100755
--- a/dap_chain_net.c
+++ b/dap_chain_net.c
@@ -38,14 +38,11 @@
 #endif
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include <pthread.h>
diff --git a/dap_chain_node.c b/dap_chain_node.c
index 1fb9ae970c2cd5b2eda0b3bc9e9e4cfe6385f54c..790b627340eec20b503ee059c6491ea1e4aeb0a1 100644
--- a/dap_chain_node.c
+++ b/dap_chain_node.c
@@ -28,14 +28,11 @@
 #include <string.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #else
 #include <sys/socket.h>
diff --git a/dap_chain_node_cli.c b/dap_chain_node_cli.c
index d7cab8822a0ead75a85fdb43633ee7886424b7c1..de684df089f5f71285ea6fc12ced3ebf1e930b4e 100755
--- a/dap_chain_node_cli.c
+++ b/dap_chain_node_cli.c
@@ -46,14 +46,11 @@ typedef int SOCKET;
 #define INVALID_SOCKET  -1  // for win32 =  (SOCKET)(~0)
 // for Windows
 #else
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include <pthread.h>
diff --git a/dap_chain_node_cli_cmd.c b/dap_chain_node_cli_cmd.c
index 8ae4d435ec1287844df1348ff3611867331300a7..59df5b3a73ee2d8fee860f93940bc4b5bd1bdff9 100644
--- a/dap_chain_node_cli_cmd.c
+++ b/dap_chain_node_cli_cmd.c
@@ -37,14 +37,11 @@
 #include <dirent.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #else
 #include <sys/types.h>
diff --git a/dap_chain_node_client.c b/dap_chain_node_client.c
index 0ece420862ece432ad250fe4330e35a779efa46e..53b815308df211f71ead06d539eaa028b157001f 100644
--- a/dap_chain_node_client.c
+++ b/dap_chain_node_client.c
@@ -31,14 +31,11 @@
 #include <string.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #endif
 
diff --git a/dap_chain_node_remote.c b/dap_chain_node_remote.c
index 515d1123b8f99cb0effe8f4c77fb3fad138a2a1c..cabf4dd34e4b5e07bcf67b93169b5a38f6a54636 100644
--- a/dap_chain_node_remote.c
+++ b/dap_chain_node_remote.c
@@ -28,14 +28,11 @@
 #include <pthread.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include "uthash.h"