Which two types of Windows updates are automatically installed by Windows 10 by default?

In Windows 10, two types of updates that are automatically installed by default are security updates and critical updates. Security updates are essential; they protect the system from vulnerabilities and cyber threats, ensuring that the operating system remains secure. Critical updates, on the other hand, are necessary for fixing significant issues that affect the usability or functionality of the system. These updates help maintain system stability and performance, allowing users to have a seamless experience without significant disruptions.

Service packs and optional updates are not automatically installed by default. While service packs contain a collection of updates and fixes for the operating system, they are typically released less frequently and require user action to install. Optional updates often include non-essential updates for additional features or enhancements, which users can choose to install based on their needs.

Driver updates and feature updates also do not fall into the category of what is automatically installed. Driver updates can improve hardware compatibility and performance but generally require user approval before installation. Feature updates introduce new functionalities and significant changes to the operating system, and they are released on a regular schedule, but these also require some user decision regarding the timing of installation.