Troubleshooting empty HDI if subscribed on Windows

get-started/get-help.md

@@ -283,6 +283,18 @@ npm add -D tar
 ```
 On macOS and Linux, the built-in implementation continues to be used.
 
+### Why are tenant HDI containers empty after building app on Windows?
+
+On Windows, cds build --production may silently fail to create resources.tgz in the MTX sidecar build output. 
+The build log will incorrectly report the file as written. 
+
+Install the tar library to fix this:
+
+```sh
+npm add -D tar
+```
+On macOS and Linux, the built-in implementation continues to be used.
+
 
 
 ## Java