diff --git a/buildbot/osuosl/master/config/builders.py b/buildbot/osuosl/master/config/builders.py
--- a/buildbot/osuosl/master/config/builders.py
+++ b/buildbot/osuosl/master/config/builders.py
@@ -200,6 +200,18 @@
                         WithProperties("%(remote_test_user:+-DREMOTE_TEST_USER=)s%(remote_test_user:-)s"),
                       ],
                       cmake_cache="../llvm-project/clang/cmake/caches/CrossWinToARMLinux.cmake")},
+
+        {'name': "clang-arm64-windows-msvc",
+         'slavenames':["linaro-armv8-windows-msvc-01", "linaro-armv8-windows-msvc-02"],
+         'builddir':"clang-arm64-windows-msvc",
+         'factory' : ClangBuilder.getClangCMakeBuildFactory(
+                      vs="manual",
+                      test=False, # Disable testing until MCJIT failures are fixed
+                      extra_cmake_args=["-DLLVM_DEFAULT_TARGET_TRIPLE=aarch64-windows-msvc",
+                                        "-DLLVM_HOST_TRIPLE=aarch64-windows-msvc",
+                                        "-DLLVM_TARGET_ARCH=AArch64",
+                                        "-DCOMPILER_RT_BUILD_SANITIZERS=OFF",
+                                        "-DCOMPILER_RT_BUILD_XRAY=OFF"])},
     ]
 
 # Clang builders.
@@ -424,6 +436,20 @@
                                         "-DLLVM_TARGETS_TO_BUILD='ARM;AArch64'"],
                )},
 
+        {'name': "clang-arm64-windows-msvc-2stage",
+         'slavenames':["linaro-armv8-windows-msvc-01", "linaro-armv8-windows-msvc-02"],
+         'builddir':"clang-arm64-windows-msvc-2stage",
+         'factory' : ClangBuilder.getClangCMakeBuildFactory(
+                      vs="manual",
+                      test=False, # Disable testing until MCJIT failures are fixed
+                      useTwoStage=True,
+                      testStage1=False,
+                      extra_cmake_args=["-DLLVM_DEFAULT_TARGET_TRIPLE=aarch64-windows-msvc",
+                                        "-DLLVM_HOST_TRIPLE=aarch64-windows-msvc",
+                                        "-DLLVM_TARGET_ARCH=AArch64",
+                                        "-DCOMPILER_RT_BUILD_SANITIZERS=OFF",
+                                        "-DCOMPILER_RT_BUILD_XRAY=OFF"])},
+
         {'name': 'clang-x64-windows-msvc',
          'slavenames': ['windows-gcebot2'],
          'builddir': 'clang-x64-windows-msvc',
diff --git a/buildbot/osuosl/master/config/slaves.py b/buildbot/osuosl/master/config/slaves.py
--- a/buildbot/osuosl/master/config/slaves.py
+++ b/buildbot/osuosl/master/config/slaves.py
@@ -49,6 +49,10 @@
         create_slave("linaro-aarch64-libcxx", properties={'jobs' : 1}, max_builds=1),
         create_slave("linaro-aarch64-lldb", properties={'jobs': 16}, max_builds=1),
 
+        # AArch64
+        create_slave("linaro-armv8-windows-msvc-01", properties={'jobs' : 8}, max_builds=1),
+        create_slave("linaro-armv8-windows-msvc-02", properties={'jobs' : 8}, max_builds=1),
+
         # ARMv7 build cache slave
         create_slave("packet-linux-armv7-slave-1", properties={'jobs' : 64}, max_builds=1),
 
diff --git a/zorg/buildbot/builders/ClangBuilder.py b/zorg/buildbot/builders/ClangBuilder.py
--- a/zorg/buildbot/builders/ClangBuilder.py
+++ b/zorg/buildbot/builders/ClangBuilder.py
@@ -299,7 +299,7 @@
     stage2_install = 'stage2.install'
 
     # Set up VS environment, if appropriate.
-    if vs:
+    if vs and vs != "manual":
         f.addStep(SetProperty(
             command=builders_util.getVisualStudioEnvironment(vs, vs_target_arch),
             extract_fn=builders_util.extractSlaveEnvironment))