diff --git a/Make.config b/Make.config
index d5721387db1b..cfc027d746d3 100644
--- a/Make.config
+++ b/Make.config
@@ -60,7 +60,7 @@ MIN_XM_MONO_URL=https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/
 # Minimum Visual Studio version
 MIN_VISUAL_STUDIO_URL=https://bosstoragemirror.azureedge.net/vsmac/7a/7aff2dc1f28d711d11d63d79b2a4c49cda217189/VisualStudioForMac-Preview-7.7.0.1470.dmg
 MIN_VISUAL_STUDIO_VERSION=7.7.0.1470
-MAX_VISUAL_STUDIO_VERSION=8.0.99
+MAX_VISUAL_STUDIO_VERSION=7.7.0.1470
 
 # Minimum CMake version
 MIN_CMAKE_URL=https://cmake.org/files/v3.6/cmake-3.6.2-Darwin-x86_64.dmg
diff --git a/external/mono b/external/mono
index 3cb36842fc47..3a07bd426d3d 160000
--- a/external/mono
+++ b/external/mono
@@ -1 +1 @@
-Subproject commit 3cb36842fc47eb8d749cabe351b3902c24065d77
+Subproject commit 3a07bd426d3dae0d9b6c7891e7bb11f487b18484
diff --git a/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression.FileSystem_test.dll.ignore b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression.FileSystem_test.dll.ignore
new file mode 100644
index 000000000000..f0d92c525eaf
--- /dev/null
+++ b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression.FileSystem_test.dll.ignore
@@ -0,0 +1,5 @@
+# files are missing in the test dlls
+MonoTests.System.IO.Compression.FileSystem.ZipArchiveTests.ZipCreateFromEntryChangeTimestamp
+MonoTests.System.IO.Compression.FileSystem.ZipArchiveTests.ZipCreateFromDirectory
+MonoTests.System.IO.Compression.FileSystem.ZipArchiveTests.ZipCreateFromDirectoryIncludeBase
+MonoTests.System.IO.Compression.FileSystem.ZipArchiveTests.ZipExtractToDirectory
diff --git a/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression_test.dll.ignore b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression_test.dll.ignore
new file mode 100644
index 000000000000..89e976e22550
--- /dev/null
+++ b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.IO.Compression_test.dll.ignore
@@ -0,0 +1,21 @@
+# files are missing in the test dll
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipDeleteEntryCheckEntries
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipEnumerateArchiveDefaultLastWriteTime
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipEnumerateEntriesCreateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipEnumerateEntriesModifiedTime
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipEnumerateEntriesReadMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipEnumerateEntriesUpdateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetArchiveEntryStreamLengthPositionReadMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetArchiveEntryStreamLengthPositionUpdateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryCreateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryDeleteReadMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryDeleteUpdateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryOpen
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryReadMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipGetEntryUpdateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipOpenAndReopenEntry
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipOpenCloseAndReopenEntry
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipReadNonSeekableStream
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipWriteEntriesUpdateMode
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipWriteEntriesUpdateModeNonZeroPosition
+MonoTests.System.IO.Compression.ZipArchiveTests.ZipWriteNonSeekableStream
\ No newline at end of file
diff --git a/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.ServiceModel_test.dll.ignore b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.ServiceModel_test.dll.ignore
index 86c613d078b4..b16f29a29398 100644
--- a/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.ServiceModel_test.dll.ignore
+++ b/tests/bcl-test/BCLTests/macOS-xammac_net_4_5_System.ServiceModel_test.dll.ignore
@@ -13,4 +13,7 @@
  MonoTests.System.ServiceModel.EndpointIdentityTest.CreateX509CertificateIdentity
  MonoTests.System.ServiceModel.EndpointAddressTest.WriteToWSA10
  MonoTests.System.ServiceModel.EndpointAddressTest.WriteContentsToWSA10
- MonoTests.System.ServiceModel.Description.MetadataSetTest.ReadFrom
\ No newline at end of file
+ MonoTests.System.ServiceModel.Description.MetadataSetTest.ReadFrom
+ MonoTests.System.ServiceModel.Channels.MessageFaultTest.CreateFault
+ MonoTests.System.ServiceModel.Channels.MessageFaultTest.CreateFaultIncomplete
+ MonoTests.System.ServiceModel.Channels.MessageFaultTest.CreateFaultIncomplete4
\ No newline at end of file