diff --git a/lib/libc/mingw/math/arm-common/scalbn.c b/lib/libc/mingw/math/arm-common/scalbn.c
new file mode 100644
index 0000000000..0e2f14ab7c
--- /dev/null
+++ b/lib/libc/mingw/math/arm-common/scalbn.c
@@ -0,0 +1,45 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#include <math.h>
+
+double scalbn(double x, int exp)
+{
+    return x * exp2(exp);
+}
+
+float scalbnf(float x, int exp)
+{
+    return x * exp2f(exp);
+}
+
+long double scalbnl(long double x, int exp)
+{
+#if defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_)
+    return scalbn(x, exp);
+#else
+#error Not supported on your platform yet
+#endif
+}
+
+double scalbln(double x, long exp)
+{
+    return x * exp2(exp);
+}
+
+float scalblnf(float x, long exp)
+{
+    return x * exp2f(exp);
+}
+
+long double scalblnl(long double x, long exp)
+{
+#if defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_)
+    return scalbln(x, exp);
+#else
+#error Not supported on your platform yet
+#endif
+}
diff --git a/src/mingw.zig b/src/mingw.zig
index ca5fa6a01f..587f019270 100644
--- a/src/mingw.zig
+++ b/src/mingw.zig
@@ -1025,6 +1025,7 @@ const mingwex_arm64_src = [_][]const u8{
     "misc" ++ path.sep_str ++ "initenv.c",
     "math" ++ path.sep_str ++ "arm-common" ++ path.sep_str ++ "log2.c",
     "math" ++ path.sep_str ++ "arm-common" ++ path.sep_str ++ "pow.c",
+    "math" ++ path.sep_str ++ "arm-common" ++ path.sep_str ++ "scalbn.c",
     "math" ++ path.sep_str ++ "arm64" ++ path.sep_str ++ "_chgsignl.S",
     "math" ++ path.sep_str ++ "arm64" ++ path.sep_str ++ "rint.c",
     "math" ++ path.sep_str ++ "arm64" ++ path.sep_str ++ "rintf.c",
diff --git a/src/windows_sdk.cpp b/src/windows_sdk.cpp
index fd88374311..305e3b9e54 100644
--- a/src/windows_sdk.cpp
+++ b/src/windows_sdk.cpp
@@ -23,16 +23,19 @@ enum NativeArch {
     NativeArchArm,
     NativeArchi386,
     NativeArchx86_64,
+    NativeArchAarch64,
 };
 
 #if defined(_M_ARM) || defined(__arm_)
 static const NativeArch native_arch = NativeArchArm;
-#endif
-#if defined(_M_IX86) || defined(__i386__)
+#elif defined(_M_IX86) || defined(__i386__)
 static const NativeArch native_arch = NativeArchi386;
-#endif
-#if defined(_M_X64) || defined(__x86_64__)
+#elif defined(_M_X64) || defined(__x86_64__)
 static const NativeArch native_arch = NativeArchx86_64;
+#elif defined(__aarch64__)
+static const NativeArch native_arch = NativeArchAarch64;
+#else
+#error unsupported architecture
 #endif
 
 void zig_free_windows_sdk(struct ZigWindowsSDK *sdk) {
@@ -116,6 +119,10 @@ static ZigFindWindowsSdkError find_msvc_lib_dir(ZigWindowsSDKPrivate *priv) {
             case NativeArchArm:
                 out_append_ptr += sprintf(out_append_ptr, "arm\\");
                 break;
+            case NativeArchAarch64:
+                // TODO: is this right?
+                out_append_ptr += sprintf(out_append_ptr, "aarch64\\");
+                break;
             }
             sprintf(tmp_buf, "%s%s", output_path, "vcruntime.lib");
 
@@ -161,6 +168,10 @@ com_done:;
     case NativeArchArm:
         tmp_buf_append_ptr += sprintf(tmp_buf_append_ptr, "arm\\");
         break;
+    case NativeArchAarch64:
+        // TODO: is this right?
+        tmp_buf_append_ptr += sprintf(tmp_buf_append_ptr, "aarch64\\");
+        break;
     }
 
     char *output_path = strdup(tmp_buf);
@@ -204,6 +215,10 @@ static ZigFindWindowsSdkError find_10_version(ZigWindowsSDKPrivate *priv) {
 	case NativeArchArm:
 		option_name = "OptionId.DesktopCPParm";
 		break;
+	case NativeArchAarch64:
+                // TODO: is this right?
+		option_name = "OptionId.DesktopCPParm64";
+		break;
 	case NativeArchx86_64:
 		option_name = "OptionId.DesktopCPPx64";
 		break;