Try to use previous VS 2019 image to see if it fixes any of the issues.

See https://www.appveyor.com/updates/ 'Visual Studio 2019 image update on November 5, 2022'
Amber-MD · Nov 17, 2022 · 5386f74 · 5386f74
1 parent 662b48f
commit 5386f74
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,7 +1,7 @@
 platform:
   - x64
 
-image: Visual Studio 2019
+image: Previous Visual Studio 2019
 
 clone_folder: c:\projects\cpptraj