--- putty-0.72/mkfiles.pl.orig	2019-07-22 10:11:41.660392900 +0300
+++ putty-0.72/mkfiles.pl	2019-07-22 10:12:42.235299300 +0300
@@ -547,12 +547,12 @@
     "# C compilation flags\n".
     &splitline("CFLAGS = --target=\$(CCTARGET) /nologo /W3 /O1 -Wvla " .
                (join " ", map {"-I$dirpfx$_"} @srcdirs) .
-               " /D_WINDOWS /D_WIN32_WINDOWS=0x500 /DWINVER=0x500 ".
+               " /D_WINDOWS /D_WIN32_WINDOWS=0x0601 /DWINVER=0x0601 ".
                "/D_CRT_SECURE_NO_WARNINGS /D_WINSOCK_DEPRECATED_NO_WARNINGS").
                " \$(PLATFORMCFLAGS)\n".
     "LFLAGS = /incremental:no /dynamicbase /nxcompat\n".
     &splitline("RCPPFLAGS = ".(join " ", map {"-I$dirpfx$_"} @srcdirs).
-               " -DWIN32 -D_WIN32 -DWINVER=0x0400")." \$(RCFL)\n".
+               " -DWIN32 -D_WIN32 -DWINVER=0x0601")." \$(RCFL)\n".
     "\n".
     &def($makefile_extra{'clangcl'}->{'vars'}) .
     "\n".
@@ -638,7 +638,7 @@
 	       "\n".
     "LDFLAGS = -s\n".
     &splitline("RCFLAGS = \$(RCINC) --define WIN32=1 --define _WIN32=1 ".
-      "--define WINVER=0x0400 ".(join " ", map {"-I$dirpfx$_"} @srcdirs))."\n".
+      "--define WINVER=0x0601 ".(join " ", map {"-I$dirpfx$_"} @srcdirs))."\n".
     "\n".
     &def($makefile_extra{'cygwin'}->{'vars'}) .
     "\n".
@@ -698,10 +698,10 @@
       "# C compilation flags\n".
       "CFLAGS = /nologo /W3 /O1 " .
       (join " ", map {"-I$dirpfx$_"} @srcdirs) .
-      " /D_WINDOWS /D_WIN32_WINDOWS=0x500 /DWINVER=0x500 /D_CRT_SECURE_NO_WARNINGS /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE\n".
+      " /D_WINDOWS /D_WIN32_WINDOWS=0x0601 /DWINVER=0x0601 /D_CRT_SECURE_NO_WARNINGS /D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE\n".
       "LFLAGS = /incremental:no /dynamicbase /nxcompat\n".
       "RCFLAGS = ".(join " ", map {"-I$dirpfx$_"} @srcdirs).
-      " -DWIN32 -D_WIN32 -DWINVER=0x0400\n".
+      " -DWIN32 -D_WIN32 -DWINVER=0x0601\n".
       "\n".
       &def($makefile_extra{'vc'}->{'vars'}) .
       "\n".
--- putty-0.72/Recipe.orig	2019-07-22 10:09:17.098138800 +0300
+++ putty-0.72/Recipe	2019-07-22 10:09:31.808964700 +0300
@@ -226,7 +226,7 @@
 # systems with IE5+ installed, such as some arguments to SHGetFolderPath().
 # WINVER etc perform a similar function for FlashWindowEx().
 CFLAGS += -D_WIN32_IE=0x0500
-CFLAGS += -DWINVER=0x0500 -D_WIN32_WINDOWS=0x0410 -D_WIN32_WINNT=0x0500
+CFLAGS += -DWINVER=0x0601 -D_WIN32_WINDOWS=0x0601 -D_WIN32_WINNT=0x0601
 !end
 
 # ------------------------------------------------------------