In #44775 , we added some tests that use the expect utility to provide a password to Elasticsearch using an interactive terminal. This was easy to install in Unix environments, but to do so in Windows would be more complex.

I want to look into using a Java-native pseudo-terminal (e.g., https://github.com/JetBrains/pty4j) before asking the infra team to update our windows images. If that doesn't pan out, I'll file a ticket with infra to work on providing expect on Windows at test time.