Yes, you can use Power Automate with Microsoft Azure Key Vault. Azure Key Vault is a service that allows you to securely store and manage secrets such as cryptographic keys, certificates, and passwords. Power Automate can interact with Azure Key Vault through connectors, allowing you to retrieve these secrets and use them in your automation workflows.

For instance, you can use Azure Key Vault secrets to create Windows credentials for desktop flow connections, according to an official blog post from Power Automate. This feature provides a secure way to handle sensitive data in your flows.