diff --git a/src/arch/common/cc-msvc.sh b/src/arch/common/cc-msvc.sh
index 2d574a3f4b..e5f874d7db 100644
--- a/src/arch/common/cc-msvc.sh
+++ b/src/arch/common/cc-msvc.sh
@@ -1,5 +1,6 @@
 
 CMK_CC="$CHARMBIN/unix2nt_cc"
+CMK_SEQ_CC="$CMK_CC"
 CMK_CPP_C="$CMK_CC"
 CMK_CXX="$CHARMBIN/unix2nt_cc"
 CMK_LD="$CMK_CC"
diff --git a/src/arch/win/unix2nt_cc b/src/arch/win/unix2nt_cc
index 060c61d3a0..5f135a7ef3 100755
--- a/src/arch/win/unix2nt_cc
+++ b/src/arch/win/unix2nt_cc
@@ -15,30 +15,15 @@ set -o errexit
 # Configurable option: Location of MSDEV
 if [[ -z "$VCINSTALLDIR" ]]
 then
-  VCC_DIR='C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC'
+  VCC_DIR='C:/Program Files/Microsoft Visual Studio/2022/Community/VC'
 else
   VCC_DIR="$VCINSTALLDIR"
 fi
-if [[ ! -d "$(cygpath -u "$VCC_DIR")" ]]
+if [[ ! -d "$(cygpath.exe -u "$VCC_DIR")" ]]
 then
   echo "\$VCINSTALLDIR is not set properly: $VCC_DIR"
   exit 1
 fi
-if [[ -n "$WINDOWSSDKDIR" ]]
-then
-  SDK_DIR="$WINDOWSSDKDIR"
-elif [[ -n "$WindowsSdkDir" ]]
-then
-  SDK_DIR="$WindowsSdkDir"
-else
-  SDK_DIR='C:/Program Files/Windows Kits/10'
-fi
-if [[ ! -d "$(cygpath -u "$SDK_DIR")" ]]
-then
-  echo "\$WindowsSdkDir is not set properly: $SDK_DIR"
-  exit 1
-fi
-
 #CL command-line options for -O and -g mode
 #only for the environment that has set corresponding environmental variables
 CL_CMD='CL.EXE'
@@ -71,8 +56,7 @@ else
 LINK_CMD="$VCC_DIR/BIN/LINK.EXE"
 fi
 LINK_COMMON=(-nologo -subsystem:console -DYNAMICBASE:NO)
-LINK_POST=(ws2_32.lib kernel32.lib user32.lib psapi.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib -MACHINE:X64 -ERRORREPORT:PROMPT)
-
+LINK_POST=(WS2_32.lib WSock32.lib kernel32.lib user32.lib psapi.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib -MACHINE:X64 -ERRORREPORT:PROMPT)
 if [[ -z "$LIB" ]]
 then
 	echo "Variables already set!"
diff --git a/src/ck-perf/trace-common.C b/src/ck-perf/trace-common.C
index 541a14e58a..7aaa433949 100644
--- a/src/ck-perf/trace-common.C
+++ b/src/ck-perf/trace-common.C
@@ -4,8 +4,10 @@
 /*@{*/
 
 #include <sys/stat.h>
-#include <sys/types.h>
 
+#if !defined(_WIN64)
+#include <sys/types.h>
+#endif
 #include <ctime>        // std::time_t, std::gmtime
 #include <chrono>       // std::chrono::system_clock
 
@@ -32,7 +34,7 @@
 
 // To get hostname
 #if defined(_WIN32) || defined(_WIN64)
-#  include <Winsock2.h>
+//#  include <Winsock2.h>
 #else
 #  include <unistd.h>
 #  include <limits.h> // For HOST_NAME_MAX
@@ -145,7 +147,7 @@ static void traceCommonInit(char **argv)
     // Trying to decide if the traceroot path is absolute or not. If it is not
     // then create an absolute pathname for it.
     if (temproot[0] != PATHSEP) {
-      temproot2 = GETCWD(NULL,0);
+ //     temproot2 = GETCWD(NULL,0);
       root = (char *)malloc(strlen(temproot2)+1+strlen(temproot)+1);
       strcpy(root, temproot2);
       strcat(root, PATHSEPSTR);
@@ -259,8 +261,9 @@ void traceWriteSTS(FILE *stsfp,int nUserEvents) {
 
   // Add 1 for null terminator
   char hostname[HOST_NAME_MAX + 1];
-  if(gethostname(hostname, HOST_NAME_MAX + 1) == 0)
-    fprintf(stsfp, "HOSTNAME \"%s\"\n", hostname);
+
+  //if(gethostname(hostname, HOST_NAME_MAX + 1) == 0)
+//    fprintf(stsfp, "HOSTNAME \"%s\"\n", hostname);
 
   fprintf(stsfp, "COMMANDLINE \"");
   int index = 0;
@@ -277,7 +280,7 @@ void traceWriteSTS(FILE *stsfp,int nUserEvents) {
   using std::chrono::system_clock;
   const time_t now = system_clock::to_time_t(system_clock::now());
   struct tm currentTime;
-#if defined(_WIN32) || defined(_WIN64)
+#if defined(_WIN32) || defined(_WIN64) && !defined(__CYGWIN__)
   gmtime_s(&currentTime, &now);
 #else
   gmtime_r(&now, &currentTime);
diff --git a/src/ck-perf/trace-common.h b/src/ck-perf/trace-common.h
index 71a09ad442..5aee05cf47 100644
--- a/src/ck-perf/trace-common.h
+++ b/src/ck-perf/trace-common.h
@@ -15,9 +15,11 @@
 #define PATHSEP '\\'
 #define PATHSEPSTR "\\"
 #else
+#if !defined(_WIN64)
 #include <unistd.h>
+#endif
 #define CHDIR chdir
-#define GETCWD getcwd
+//#define GETCWD getcwd
 #define PATHSEP '/'
 #define PATHSEPSTR "/"
 #endif
diff --git a/src/conv-core/cpuaffinity.C b/src/conv-core/cpuaffinity.C
index 27267a7262..c5a330384b 100644
--- a/src/conv-core/cpuaffinity.C
+++ b/src/conv-core/cpuaffinity.C
@@ -77,14 +77,14 @@ void CmiInitHwlocTopology(void)
       depth != HWLOC_TYPE_DEPTH_UNKNOWN ? cmi_hwloc_get_nbobjs_by_depth(legacy_topology, depth) : 1;
 }
 
-#if CMK_HAS_SETAFFINITY || defined (_WIN32) || CMK_HAS_BINDPROCESSOR
+#if CMK_HAS_SETAFFINITY || defined (_WIN32) || defined(_WIN64) || CMK_HAS_BINDPROCESSOR
 
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <errno.h>
 
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 #include <windows.h>
 #include <winbase.h>
 #else
@@ -105,7 +105,7 @@ void CmiInitHwlocTopology(void)
 static int excludecore[MAX_EXCLUDE] = {-1};
 static int excludecount = 0;
 
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(_WIN64)
 static int affMsgsRecvd = 1;  // number of affinity messages received at PE0
 static cpu_set_t core_usage;  // used to record union of CPUs used by every PE in physical node
 static int aff_is_set = 0;
@@ -131,7 +131,7 @@ static void add_exclude(int core)
 
 static int set_process_affinity(hwloc_cpuset_t cpuset)
 {
-#ifdef _WIN32
+#if defined(_WIN32) || defined (_WIN64)
   HANDLE process = GetCurrentProcess();
 # define PRINTF_PROCESS "%p"
 #else
@@ -167,7 +167,7 @@ static int set_process_affinity(hwloc_cpuset_t cpuset)
 #if CMK_SMP
 static int set_thread_affinity(hwloc_cpuset_t cpuset)
 {
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
   HANDLE thread = GetCurrentThread();
 #else
   pthread_t thread = pthread_self();
@@ -288,7 +288,7 @@ int print_cpu_affinity(void) {
 
 #if CMK_SMP
 int print_thread_affinity(void) {
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
   HANDLE thread = GetCurrentThread();
 #else
   pthread_t thread = pthread_self();
@@ -323,7 +323,7 @@ int CmiPrintCPUAffinity(void)
 #endif
 }
 
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(_WIN64)
 int get_cpu_affinity(cpu_set_t *cpuset) {
   CPU_ZERO(cpuset);
   if (sched_getaffinity(0, sizeof(cpuset), cpuset) < 0) {
@@ -417,7 +417,7 @@ struct rankMsg {
 
 struct affMsg {
   char core[CmiMsgHeaderSizeBytes];
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(_WIN64)
   cpu_set_t affinity;
 #endif
 };
@@ -696,7 +696,7 @@ static void cpuPhyNodeAffinityRecvHandler(void *msg)
   static int count = 0;
 
   affMsg *m = (affMsg *)msg;
-#if !defined(_WIN32) && defined(CPU_OR)
+#if !defined(_WIN32) && !defined(_WIN64) && defined(CPU_OR)
   CPU_OR(&core_usage, &core_usage, &m->affinity);
   affMsgsRecvd++;
 #endif
@@ -706,7 +706,7 @@ static void cpuPhyNodeAffinityRecvHandler(void *msg)
     cpuPhyAffCheckDone = true;
 }
 
-#if defined(_WIN32)
+#if defined(_WIN32) || defined(_WIN64)
   /* strtok is thread safe in VC++ */
 #define strtok_r(x,y,z) strtok(x,y)
 #endif
@@ -812,7 +812,7 @@ CLINKAGE int getXTNodeID(int mpirank, int nummpiranks);
  */
 void CmiCheckAffinity(void)
 {
-#if !defined(_WIN32) && CMK_SMP && CMK_HAS_PTHREAD_SETAFFINITY && defined(CPU_OR)
+#if !defined(_WIN32) && !defined(_WIN64) && CMK_SMP && CMK_HAS_PTHREAD_SETAFFINITY && defined(CPU_OR)
 
   if (!CmiCpuTopologyEnabled()) return;  // only works if cpu topology enabled
 
@@ -1097,7 +1097,7 @@ void CmiInitCPUAffinity(char **argv)
   }
 
   if (CmiMyRank() ==0) {
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(_WIN64)
      aff_is_set = affinity_flag;
      CPU_ZERO(&core_usage);
 #endif
diff --git a/src/scripts/Makefile b/src/scripts/Makefile
index dc5e1d960d..cf2e8eb228 100644
--- a/src/scripts/Makefile
+++ b/src/scripts/Makefile
@@ -334,6 +334,11 @@ endif
 	-./system_ln  ../tmp/conv-mach-opt.mak ../include
 	if [ -x ./special.sh ] ; then SRCBASE=$(SRCBASE) ./special.sh ; fi
 	if [ ! -f conv-common.h ] ; then ( touch conv-common.h ) ; fi
+#       in the special case of reusing netlrts for windows, nuke Makefile.machine to not build charmrun
+	if case $(CMK_VDIR) in *-win-*) true;; *) false;; esac; then \
+		rm ../tmp/Makefile.machine ;\
+		touch ../tmp/Makefile.machine ; \
+	fi
 	touch dirs+sources
 
 ###############################################################################