By default in Windows 8, Windows 7, Windows Vista, and Windows XP, the Fast Logon Optimization feature is set for domain and workgroup members. Policy settings apply asynchronously when the computer starts and when the user signs in. As a result, Windows 8, Windows 7, Windows Vista, and Windows XP do not wait for the network to be fully initialized at startup and sign-in. Existing users are logged on by using cached credentials. This results in shorter logon times. Group Policy is applied in the background after the network becomes available. Be aware that, because this is a background refresh, extensions such as Software Installation and Folder Redirection take two logons to apply changes. Additionally, changes that are made to the user object, such as adding a roaming profile path, root directory, or user object logon script, may take two logons to be detected.