diff --git a/dom/media/test/reftest/reftest.list b/dom/media/test/reftest/reftest.list
index 56289e94fe39..e245bbe0591c 100644
--- a/dom/media/test/reftest/reftest.list
+++ b/dom/media/test/reftest/reftest.list
@@ -1,5 +1,5 @@
 skip-if(Android) fuzzy-if(OSX,0-22,0-49977) fuzzy-if(webrender&&cocoaWidget,23-23,76795-76795) skip-if(winWidget) fuzzy-if(gtkWidget&&layersGPUAccelerated,0-70,0-600) HTTP(..) == short.mp4.firstframe.html short.mp4.firstframe-ref.html
 skip-if(Android) fuzzy-if(OSX,0-23,0-51392) fuzzy-if(webrender&&cocoaWidget,23-23,76798-76798) fuzzy-if(winWidget,0-59,0-76797) fuzzy-if(gtkWidget&&layersGPUAccelerated,0-60,0-1800) HTTP(..) == short.mp4.lastframe.html short.mp4.lastframe-ref.html
 skip-if(Android) skip-if(winWidget) fuzzy-if(gtkWidget&&layersGPUAccelerated,0-55,0-4281) fuzzy-if(OSX,0-3,0-111852) HTTP(..) == bipbop_300_215kbps.mp4.lastframe.html bipbop_300_215kbps.mp4.lastframe-ref.html
-skip-if(Android) fuzzy-if(OSX,0-25,0-175921) fuzzy-if(winWidget,0-71,0-179198) HTTP(..) == gizmo.mp4.seek.html gizmo.mp4.55thframe-ref.html
-skip-if(Android) == vtt_update_display_after_removed_cue.html vtt_update_display_after_removed_cue_ref.html
+skip-if(Android) fuzzy-if(OSX,0-25,0-175921) fuzzy-if((/^Windows\x20NT\x2010\.0/.test(http.oscpu))&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI)),224-224,178000-178820) fuzzy-if(winWidget,0-71,0-179198) HTTP(..) == gizmo.mp4.seek.html gizmo.mp4.55thframe-ref.html
+skip-if(Android) fuzzy-if((/^Windows\x20NT\x2010\.0/.test(http.oscpu))&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI)),136-136,427600-427680) == vtt_update_display_after_removed_cue.html vtt_update_display_after_removed_cue_ref.html
diff --git a/js/src/tests/jstests.list b/js/src/tests/jstests.list
index ca76b1792b1e..9e3e340a9fc9 100644
--- a/js/src/tests/jstests.list
+++ b/js/src/tests/jstests.list
@@ -14,6 +14,9 @@ slow script test262/built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1.js
 # https://bugzilla.mozilla.org/show_bug.cgi?id=1499448
 skip script non262/reflect-parse/class-fields.js
 
+# windows10-aarch64 fails certain tests
+skip-if((/^Windows\x20NT\x2010\.0/.test(http.oscpu))&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI))) script non262/Math/fround.js
+skip-if((/^Windows\x20NT\x2010\.0/.test(http.oscpu))&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI))) script non262/Math/log2-approx.js
 
 ###########################################################################
 # Generated jstests.list for test262 when inline |reftest| isn't possible #
diff --git a/layout/reftests/async-scrolling/reftest.list b/layout/reftests/async-scrolling/reftest.list
index b9fcede95561..6c3149767740 100644
--- a/layout/reftests/async-scrolling/reftest.list
+++ b/layout/reftests/async-scrolling/reftest.list
@@ -12,7 +12,7 @@ fails-if(!webrender) skip-if(!asyncPan) fuzzy-if(webrender&&gtkWidget,0-1,0-87)
 skip-if(!asyncPan) == bg-fixed-child-no-culling-1.html bg-fixed-child-no-culling-1-ref.html
 skip-if(!asyncPan) == bg-fixed-child-no-culling-2.html bg-fixed-child-no-culling-2-ref.html
 skip-if(!asyncPan) == bg-fixed-child-no-culling-3.html bg-fixed-child-no-culling-3-ref.html
-fuzzy-if(Android,0-2,0-4000) fuzzy-if(browserIsRemote&&cocoaWidget,0-2,0-179524) fuzzy-if(browserIsRemote&&winWidget,0-1,0-74590) fuzzy-if(gtkWidget&&layersGPUAccelerated,0-1,0-3528) skip-if(!asyncPan) == bg-fixed-transformed-image.html bg-fixed-transformed-image-ref.html
+fuzzy-if(Android,0-2,0-4000) fuzzy-if(browserIsRemote&&cocoaWidget,0-2,0-179524) fuzzy-if((/^Windows\x20NT\x2010\.0/.test(http.oscpu))&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI)),1-1,75800-75886) fuzzy-if(browserIsRemote&&winWidget,0-1,0-74590) fuzzy-if(gtkWidget&&layersGPUAccelerated,0-1,0-3528) skip-if(!asyncPan) == bg-fixed-transformed-image.html bg-fixed-transformed-image-ref.html
 test-pref(layout.css.contain.enabled,true) skip-if(!asyncPan) == contain-paint-scrollable-frame-1.html contain-paint-scrollable-frame-1-ref.html
 skip-if(!asyncPan) == element-1.html element-1-ref.html
 pref(layers.force-active,true) skip-if(!asyncPan) == iframe-1.html iframe-1-ref.html
diff --git a/layout/style/crashtests/crashtests.list b/layout/style/crashtests/crashtests.list
index 73cab3ebe2d7..94609423a5a4 100644
--- a/layout/style/crashtests/crashtests.list
+++ b/layout/style/crashtests/crashtests.list
@@ -209,9 +209,9 @@ load large_border_image_width.html
 load link-transition-before.html
 skip-if(winWidget&&isDebugBuild&&/^Windows\x20NT\x206\.1/.test(http.oscpu)) load long-url-list-stack-overflow.html #Bug 1525117
 load scale-on-block-continuation.html
-skip-if(Android&&AndroidVersion<21) load 1383981.html
-skip-if(Android&&AndroidVersion<21) load 1383981-2.html
-skip-if(Android&&AndroidVersion<21) load 1383981-3.html
+skip-if(Android&&AndroidVersion<21||(/^Windows\x20NT\x2010\.0/.test(http.oscpu),0-1,0-256)&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI))) load 1383981.html
+skip-if(Android&&AndroidVersion<21||(/^Windows\x20NT\x2010\.0/.test(http.oscpu),0-1,0-256)&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI))) load 1383981-2.html
+skip-if(Android&&AndroidVersion<21||(/^Windows\x20NT\x2010\.0/.test(http.oscpu),0-1,0-256)&&(/^aarch64-msvc/.test(xulRuntime.XPCOMABI))) load 1383981-3.html
 load 1384824-1.html
 load 1384824-2.html
 load 1386773.html
diff --git a/testing/web-platform/meta/css/CSS2/margin-padding-clear/margin-em-inherit-001.xht.ini b/testing/web-platform/meta/css/CSS2/margin-padding-clear/margin-em-inherit-001.xht.ini
index ea82b7a668e0..7614d189ccab 100644
--- a/testing/web-platform/meta/css/CSS2/margin-padding-clear/margin-em-inherit-001.xht.ini
+++ b/testing/web-platform/meta/css/CSS2/margin-padding-clear/margin-em-inherit-001.xht.ini
@@ -13,4 +13,5 @@
     if debug and not webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538012
     FAIL
diff --git a/testing/web-platform/meta/css/CSS2/normal-flow/blocks-022.xht.ini b/testing/web-platform/meta/css/CSS2/normal-flow/blocks-022.xht.ini
index 410e43563318..14288786fe18 100644
--- a/testing/web-platform/meta/css/CSS2/normal-flow/blocks-022.xht.ini
+++ b/testing/web-platform/meta/css/CSS2/normal-flow/blocks-022.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1537993
     FAIL
diff --git a/testing/web-platform/meta/css/CSS2/tables/table-anonymous-objects-061.xht.ini b/testing/web-platform/meta/css/CSS2/tables/table-anonymous-objects-061.xht.ini
index 62fa2839c9dc..3f05e0260cee 100644
--- a/testing/web-platform/meta/css/CSS2/tables/table-anonymous-objects-061.xht.ini
+++ b/testing/web-platform/meta/css/CSS2/tables/table-anonymous-objects-061.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1537997
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-013.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-013.xht.ini
index e79cadf78b0e..5b7d330e4632 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-013.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-013.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-019.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-019.xht.ini
index 5693b9e6c1c1..1a6f78b2d9f4 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-019.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-019.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-037.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-037.xht.ini
index 477efbc8cb5b..857f410b7b06 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-037.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-037.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-061.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-061.xht.ini
index 8cd1f11f5a85..e32cdd1bc9a3 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-061.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-061.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-067.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-067.xht.ini
index eb212cb7fe2b..2e1aff0c7d48 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-067.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-067.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-115.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-115.xht.ini
index 0a452785b177..624740c03533 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-115.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-115.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-155.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-155.xht.ini
index af358114b68b..1c55973b91f2 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-155.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-155.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-171.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-171.xht.ini
index 80a2660315c8..a21b9ba575ac 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-171.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-171.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-195.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-195.xht.ini
index 1843bf901859..9c87c6720692 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-195.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-195.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-211.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-211.xht.ini
index 5560a4025a06..a14a9828c418 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-211.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-211.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-227.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-227.xht.ini
index db2a6c470738..c21692f43c19 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-227.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vlr-227.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-018.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-018.xht.ini
index 70fb369df4fb..bcad142b2387 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-018.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-018.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-024.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-024.xht.ini
index 1ae9fefe6e0d..9d22d266c624 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-024.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-024.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-042.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-042.xht.ini
index 6c40a6e5ca66..59e6467b6f42 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-042.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-042.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-106.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-106.xht.ini
index 59b27462ee1d..8507d263bc37 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-106.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-106.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-138.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-138.xht.ini
index deab82172cc6..6a0643eaaa92 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-138.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-138.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-154.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-154.xht.ini
index baf9b5b9913d..354400086348 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-154.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-154.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-170.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-170.xht.ini
index 3e5e43d19726..1c7fa5ded244 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-170.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-170.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-202.xht.ini b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-202.xht.ini
index c59f05a81a47..ffbcc9e7cbcb 100644
--- a/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-202.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/abs-pos-non-replaced-vrl-202.xht.ini
@@ -16,4 +16,5 @@
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "mac") and (version == "OS X 10.10.5") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538017
     FAIL
diff --git a/testing/web-platform/meta/css/css-writing-modes/box-offsets-rel-pos-vrl-004.xht.ini b/testing/web-platform/meta/css/css-writing-modes/box-offsets-rel-pos-vrl-004.xht.ini
index 4d4ef740076b..089cc8b39182 100644
--- a/testing/web-platform/meta/css/css-writing-modes/box-offsets-rel-pos-vrl-004.xht.ini
+++ b/testing/web-platform/meta/css/css-writing-modes/box-offsets-rel-pos-vrl-004.xht.ini
@@ -14,4 +14,5 @@
     if not debug and not webrender and e10s and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): PASS
     if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538022
     FAIL
diff --git a/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-009.html.ini b/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-009.html.ini
index b3c59ef8fe57..69e26fe65d1a 100644
--- a/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-009.html.ini
+++ b/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-009.html.ini
@@ -6,4 +6,5 @@
     if debug and not webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538001
     FAIL
diff --git a/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-010.html.ini b/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-010.html.ini
index 292902b12d07..cec4f937b73f 100644
--- a/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-010.html.ini
+++ b/testing/web-platform/meta/html/editing/editing-0/spelling-and-grammar-checking/spelling-markers-010.html.ini
@@ -6,4 +6,5 @@
     if debug and not webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
     if not debug and not webrender and e10s and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): PASS
     if not debug and webrender and e10s and (os == "win") and (version == "10.0.17134") and (processor == "x86_64") and (bits == 64): PASS
+    if (os == 'win' and processor == 'aarch64'): PASS # bug 1538005
     FAIL
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cue-rendering-transformed-video.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cue-rendering-transformed-video.html.ini
new file mode 100644
index 000000000000..829a59507a40
--- /dev/null
+++ b/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cue-rendering-transformed-video.html.ini
@@ -0,0 +1,3 @@
+[track-cue-rendering-transformed-video.html]
+  expected:
+    if (os == 'win' and processor == 'aarch64'): FAIL # bug 1538009