diff --git a/appveyor.yml b/appveyor.yml
index 80b40312..9879b3d4 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -41,6 +41,16 @@ platform:
 - Win32
 - x64
 
+# MSVC-2019 may hang up during code generation/optimization due to its own internal errors.
+matrix:
+  allow_failures:
+    - image: Visual Studio 2019
+      configuration: Release
+
+# Enable RDP for troubleshooting
+init:
+  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+
 before_build:
 - git clean -x -f -d
 - git submodule sync