Instant LogOff Modes: disabled, log only, enabled

There are three Instant LogOff modes:

• In the mode Disabled (but apply configured disconnect behavior), Instant LogOff does not enumerate any registry handles and does not force any to close.
• In the mode Log only (but apply configured disconnect behavior), Instant LogOff log does not enumerate any registry handles and does not force any to close, but it does report any problems that occur with unloading user profiles.
• In Enabled mode, Instant LogOff takes action if a user profile fails to unload.

The Instant LogOff mode does not affect the behavior for Disconnect user session when log off is initiated. If this option is selected, it is applied even if Instant LogOff is disabled or in log only mode.