diff -Naur Python-3.8.0-orig/configure.ac Python-3.8.0/configure.ac
--- Python-3.8.0-orig/configure.ac	2019-10-22 10:01:20.201777600 +0300
+++ Python-3.8.0/configure.ac	2019-10-22 10:01:21.340579600 +0300
@@ -2635,6 +2635,9 @@
 	CYGWIN*)   SHLIB_SUFFIX=.dll;;
 	*)	   SHLIB_SUFFIX=.so;;
 	esac
+	case $host_os in
+	mingw*)    SHLIB_SUFFIX=.dll;;
+	esac
 fi
 AC_MSG_RESULT($SHLIB_SUFFIX)
 
@@ -3677,6 +3680,12 @@
 	fi
 	;;
 	esac
+	case $host in
+	*-*-mingw*)
+	DYNLOADFILE="dynload_win.o"
+	extra_machdep_objs="$extra_machdep_objs PC/dl_nt.o"
+	;;
+	esac
 fi
 AC_MSG_RESULT($DYNLOADFILE)
 if test "$DYNLOADFILE" != "dynload_stub.o"
@@ -4837,6 +4846,12 @@
     *)
 	EXT_SUFFIX=${SHLIB_SUFFIX};;
 esac
+case $host_os in
+    mingw*)
+	dnl Synchronized with _PyImport_DynLoadFiletab (dynload_win.c)
+	dnl Do not use more then one dot on this platform !
+	EXT_SUFFIX=-$SOABI$SHLIB_SUFFIX;;
+esac
 
 AC_MSG_CHECKING(LDVERSION)
 LDVERSION='$(VERSION)$(ABIFLAGS)'
diff -Naur Python-3.8.0-orig/Makefile.pre.in Python-3.8.0/Makefile.pre.in
--- Python-3.8.0-orig/Makefile.pre.in	2019-10-22 10:00:29.734688900 +0300
+++ Python-3.8.0/Makefile.pre.in	2019-10-22 10:01:21.746180300 +0300
@@ -784,6 +784,12 @@
 		-DSHLIB_EXT='"$(EXT_SUFFIX)"' \
 		-o $@ $(srcdir)/Python/dynload_hpux.c
 
+Python/dynload_win.o: $(srcdir)/Python/dynload_win.c Makefile
+	$(CC) -c $(PY_CORE_CFLAGS) \
+		-DSHLIB_SUFFIX='"$(SHLIB_SUFFIX)"' \
+		-DEXT_SUFFIX='"$(EXT_SUFFIX)"' \
+		-o $@ $(srcdir)/Python/dynload_win.c
+
 Python/sysmodule.o: $(srcdir)/Python/sysmodule.c Makefile $(srcdir)/Include/pydtrace.h
 	$(CC) -c $(PY_CORE_CFLAGS) \
 		-DABIFLAGS='"$(ABIFLAGS)"' \
diff -Naur Python-3.8.0-orig/Python/dynload_win.c Python-3.8.0/Python/dynload_win.c
--- Python-3.8.0-orig/Python/dynload_win.c	2019-10-14 16:34:47.000000000 +0300
+++ Python-3.8.0/Python/dynload_win.c	2019-10-22 10:01:22.151781000 +0300
@@ -33,6 +33,12 @@
 #define PYD_UNTAGGED_SUFFIX PYD_DEBUG_SUFFIX ".pyd"
 
 const char *_PyImport_DynLoadFiletab[] = {
+#ifdef EXT_SUFFIX
+    EXT_SUFFIX, /* include SOABI flags where is encoded debug */
+#endif
+#ifdef SHLIB_SUFFIX
+    "-abi" PYTHON_ABI_STRING SHLIB_SUFFIX,
+#endif
     PYD_TAGGED_SUFFIX,
     PYD_UNTAGGED_SUFFIX,
     NULL
@@ -203,8 +209,7 @@
            ensure DLLs adjacent to the PYD are preferred. */
         Py_BEGIN_ALLOW_THREADS
         hDLL = LoadLibraryExW(wpathname, NULL,
-                              LOAD_LIBRARY_SEARCH_DEFAULT_DIRS |
-                              LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR);
+                              LOAD_WITH_ALTERED_SEARCH_PATH);
         Py_END_ALLOW_THREADS
 #if HAVE_SXS
         _Py_DeactivateActCtx(cookie);