Which tool in Windows allows for the configuration of user rights assignments?

The tool that allows for the configuration of user rights assignments in Windows is the Local Security Policy. This policy is part of the security settings in the Windows operating system and provides a range of options to configure user permissions and rights on the local machine.

User rights assignments specify what actions users and groups can perform on a local computer or network. For instance, they can determine who can log on locally, access the computer over the network, or shut down the system, among other permissions.

The Local Security Policy is essential for systems administrators to fine-tune how users interact with the operating environment, ensuring a secure and appropriately accessible system. By managing these assignments effectively, organizations can enforce security policies and compliance.

In contrast to the other options, while Task Manager is used for managing running applications and processes, and User Account Control (UAC) helps prevent unauthorized changes to the operating system, they do not specifically handle user rights assignments. Group Policy Editor can manage user rights in more complex environments, but for individual local configurations, the Local Security Policy is the dedicated tool.