User Accounts overview
A user account defines the actions a user can perform in Windows. On a stand-alone computer or a computer that is a member of a workgroup, a user account establishes the privileges assigned to each user. On a computer that is part of a network domain, a user must be a member of at least one group. The permissions and rights granted to a group are assigned to its members.
User accounts on a computer that is a member of a network domain
You must be logged on as an administrator or a member of the Administrators group to use User Accounts in Control Panel.
User Accounts allows you to add users to your computer and to add users to a group In Windows, permissions and user rights usually are granted to groups. By adding a user to a group, you give the user all the permissions and user rights assigned to that group.
For instance, a member of the Users group can perform most of the tasks necessary to do his or her job, such as logging on to the computer, creating files and folders, running programs, and saving changes to files. However, only a member of the Administrators group can add users to groups, change user passwords, or modify most system settings.
User Accounts lets you create or change the password for local user accounts, which is useful when creating a new user account or if a user forgets a password. A local user account is an account created by this computer. If the computer is part of a network, you can add network user accounts to groups on your computer, and those users can use their network passwords to log on. You cannot change the password of a network user.
User Accounts on a computer that is a member of a workgroup or is a stand-alone computer
There are two types of user accounts available on your computer: computer administrator and limited. The guest account is available for users with no assigned account on the computer.
Computer administrator account
The computer administrator account is intended for someone who can make systemwide changes to the computer, install programs, and access all files on the computer. Only a user with computer administrator account has full access to other user accounts on the computer. This user:
The limited account is intended for someone who should be prohibited from changing most computer settings and deleting important files. A user with a limited account:
The guest account is intended for use by someone who has no user account on the computer. There is no password for the guest account, so the user can log on quickly to check e-mail or browse the Internet. A user logged on to the guest account: