Users of the latest Windows 10 update have encountered a new Outlook app intended to replace the Mail and Calendar applications, but feedback has been largely negative. The new app is reported to be slower than the previous Mail app, and its reliance on cloud storage has raised privacy concerns. Additionally, the integration of advertisements within the email interface has frustrated users. A third-party tool has been developed to block the installation of the new Outlook app. Microsoft has provided resources to help users manage data usage and optimize their experience with the new app.