The User Profile Service (ProfSvc) is responsible for loading and unloading user profiles. If this service is stopped or disabled, users cannot successfully log on or log off, applications may have problems getting to users' data, and components that are registered to receive profile event notifications do not receive them. This service should not be stopped or disabled.

This service is installed by default and its startup type is Automatic.

When the User Profile Service is started in its default configuration, it logs on by using the Local System account.

The User Profile Service is dependent upon the following system components:

• Remote Procedure Call (RPC)
• DCOM Server Process Launcher
• RPC Endpoint Mapper

The following system component is dependent on the User Profile Service:

• Application Information