diff --git a/taskcluster/taskgraph/transforms/coalesce.py b/taskcluster/taskgraph/transforms/coalesce.py
index 310269642f51..ed557e39bf0a 100644
--- a/taskcluster/taskgraph/transforms/coalesce.py
+++ b/taskcluster/taskgraph/transforms/coalesce.py
@@ -35,7 +35,6 @@ def enable_coalescing(config, jobs):
             'aws-provisioner-v1/gecko-t-win7-32-gpu',
             'aws-provisioner-v1/gecko-t-win10-64',
             'aws-provisioner-v1/gecko-t-win10-64-gpu',
-            'releng-hardware/gecko-t-win10-64-hw',
         ]:
             job['coalesce'] = {
                 'job-identifier': sha256(job["label"]).hexdigest()[:20],
diff --git a/taskcluster/taskgraph/transforms/tests.py b/taskcluster/taskgraph/transforms/tests.py
index 9695a3dcb07b..5a3d23a61362 100644
--- a/taskcluster/taskgraph/transforms/tests.py
+++ b/taskcluster/taskgraph/transforms/tests.py
@@ -52,27 +52,27 @@ WINDOWS_WORKER_TYPES = {
     'windows7-32': {
       'virtual': 'aws-provisioner-v1/gecko-t-win7-32',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win7-32-gpu',
-      'hardware': 'releng-hardware/gecko-t-win10-64-hw',
+      'hardware': 'releng-hardware/gecko-t-win7-32-hw',
     },
     'windows7-32-pgo': {
       'virtual': 'aws-provisioner-v1/gecko-t-win7-32',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win7-32-gpu',
-      'hardware': 'releng-hardware/gecko-t-win10-64-hw',
+      'hardware': 'releng-hardware/gecko-t-win7-32-hw',
     },
     'windows7-32-nightly': {
       'virtual': 'aws-provisioner-v1/gecko-t-win7-32',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win7-32-gpu',
-      'hardware': 'releng-hardware/gecko-t-win10-64-hw',
+      'hardware': 'releng-hardware/gecko-t-win7-32-hw',
     },
     'windows7-32-devedition': {
       'virtual': 'aws-provisioner-v1/gecko-t-win7-32',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win7-32-gpu',
-      'hardware': 'releng-hardware/gecko-t-win10-64-hw',
+      'hardware': 'releng-hardware/gecko-t-win7-32-hw',
     },
     'windows7-32-stylo-disabled': {
       'virtual': 'aws-provisioner-v1/gecko-t-win7-32',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win7-32-gpu',
-      'hardware': 'releng-hardware/gecko-t-win10-64-hw',
+      'hardware': 'releng-hardware/gecko-t-win7-32-hw',
     },
     'windows10-64': {
       'virtual': 'aws-provisioner-v1/gecko-t-win10-64',
@@ -926,23 +926,25 @@ def set_worker_type(config, tests):
         # during the taskcluster migration, this is a bit tortured, but it
         # will get simpler eventually!
         test_platform = test['test-platform']
+        try_options = config.params['try_options'] if config.params['try_options'] else {}
         if test.get('worker-type'):
             # This test already has its worker type defined, so just use that (yields below)
             pass
         elif test_platform.startswith('macosx'):
             test['worker-type'] = MACOSX_WORKER_TYPES['macosx64']
         elif test_platform.startswith('win'):
-            # figure out what platform the job needs to run on
-            if test['virtualization'] == 'hardware':
-                # some jobs like talos and reftest run on real h/w - those are all win10
-                win_worker_type_platform = WINDOWS_WORKER_TYPES['windows10-64']
+            win_worker_type_platform = WINDOWS_WORKER_TYPES[
+                test_platform.split('/')[0]
+            ]
+            if test.get('suite', '') == 'talos' and 'ccov' not in test['build-platform']:
+                if try_options.get('taskcluster_worker'):
+                    test['worker-type'] = win_worker_type_platform['hardware']
+                elif test['virtualization'] == 'virtual':
+                    test['worker-type'] = win_worker_type_platform[test['virtualization']]
+                else:
+                    test['worker-type'] = 'buildbot-bridge/buildbot-bridge'
             else:
-                # the other jobs run on a vm which may or may not be a win10 vm
-                win_worker_type_platform = WINDOWS_WORKER_TYPES[
-                    test_platform.split('/')[0]
-                ]
-            # now we have the right platform set the worker type accordingly
-            test['worker-type'] = win_worker_type_platform[test['virtualization']]
+                test['worker-type'] = win_worker_type_platform[test['virtualization']]
         elif test_platform.startswith('linux') or test_platform.startswith('android'):
             if test.get('suite', '') == 'talos' and test['build-platform'] != 'linux64-ccov/opt':
                 test['worker-type'] = 'releng-hardware/gecko-t-linux-talos'
@@ -954,6 +956,18 @@ def set_worker_type(config, tests):
         yield test
 
 
+@transforms.add
+def skip_win10_hardware(config, tests):
+    """Windows 10 hardware isn't ready yet, don't even bother scheduling
+    unless we're on try"""
+    for test in tests:
+        if 'releng-hardware/gecko-t-win10-64-hw' not in test['worker-type']:
+            yield test
+        if config.params == 'try':
+            yield test
+        # Silently drop the test on the floor if its win10 hardware and we're not try
+
+
 @transforms.add
 def make_job_description(config, tests):
     """Convert *test* descriptions to *job* descriptions (input to
diff --git a/testing/mozharness/configs/talos/windows_config.py b/testing/mozharness/configs/talos/windows_config.py
index 17f5f16b7bc0..a0c837b5c663 100644
--- a/testing/mozharness/configs/talos/windows_config.py
+++ b/testing/mozharness/configs/talos/windows_config.py
@@ -1,8 +1,7 @@
 import os
 import socket
-import sys
 
-PYTHON = sys.executable
+PYTHON = 'c:/mozilla-build/python27/python.exe'
 PYTHON_DLL = 'c:/mozilla-build/python27/python27.dll'
 VENV_PATH = os.path.join(os.getcwd(), 'build/venv')
 
@@ -23,8 +22,7 @@ config = {
                          '%s/scripts/easy_install-2.7-script.py' % VENV_PATH],
         'mozinstall': ['%s/scripts/python' % VENV_PATH,
                        '%s/scripts/mozinstall-script.py' % VENV_PATH],
-        'hg': os.path.join(os.environ['PROGRAMFILES'], 'Mercurial', 'hg'),
-        'tooltool.py': [PYTHON, os.path.join(os.environ['MOZILLABUILD'], 'tooltool.py')],
+        'hg': 'c:/mozilla-build/hg/hg',
     },
     "title": socket.gethostname().split('.')[0],
     "default_actions": [