Windows logon system account




















The simple answer is no, but that doesn't tell the full story. It has something called evidence , which is a term used in the Windows security model to mean any form of identifying data that proves you are who you say you are.

This isn't as clear-cut as just passwords or certificates, but extends to things like security tokens attached to threads or processes. As such, it doesn't have a password in the sense that you could type something in and log into it, but it does have evidence that proves it is the SYSTEM account in order to prevent a local process from impersonating it.

The important thing to remember here is that a process can run as SYSTEM but still have handles to objects that exist under a different session. Keep in mind that sessions aren't the same as users - they're container objects that are instantiated for users when they log on.

By default, services run under the null session, which you can't see. The important distinction is that you don't own that process or its handles, but you own the session under which the window exists. As for why you had trouble with deleting and renaming, I'm not sure. I'd suggest trying cmd or something similar rather than Explorer. My advice would be to read the security model sections of the Windows Internals book by Mark Russinovich, which has really in-depth explanations about how all this works.

Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. System Account in Windows Ask Question. Asked 7 years, 4 months ago. Active 10 months ago. Viewed 26k times.

For more information, see Service Security and Access Rights. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Because the Guest account can provide anonymous access, it is a security risk. For this reason, it is a best practice to leave the Guest account disabled, unless its use is entirely necessary. By default, the Guest account is the only member of the default Guests group SID S , which lets a user sign in to a server.

On occasion, an administrator who is a member of the Administrators group can set up a user with a Guest account on one or more computers. When enabling the Guest account, only grant limited rights and permissions. For security reasons, the Guest account should not be used over the network and made accessible to other computers. In addition, the guest user in the Guest account should not be able to view the event logs. After the Guest account is enabled, it is a best practice to monitor the Guest account frequently to ensure that other users cannot use services and other resources, such as resources that were unintentionally left available by a previous user.

The HelpAssistant account is a default local account that is enabled when a Remote Assistance session is run. This account is automatically disabled when no Remote Assistance requests are pending.

HelpAssistant is the primary account that is used to establish a Remote Assistance session. The Remote Assistance session is used to connect to another computer running the Windows operating system, and it is initiated by invitation.

For solicited remote assistance, a user sends an invitation from their computer, through e-mail or as a file, to a person who can provide assistance.

This group includes all users who sign in to a server with Remote Desktop Services enabled. This group includes all users who connect to the computer by using a remote desktop connection. This group is a subset of the Interactive group. For the Windows Server operating system, Remote Assistance is an optional component that is not installed by default.

You must install Remote Assistance before it can be used. The DSMA is a well-known user account type. It is a user neutral account that can be used to run processes that are either multi-user aware or user-agnostic. The DSMA alias can be granted access to resources during offline staging even before the account itself has been created.

From a permission perspective, the DefaultAccount is a standard user account. MUMA apps run all the time and react to users signing in and signing out of the devices. Today, Xbox automatically signs in as Guest account and all apps run in this context.

All the apps are multi-user-aware and respond to events fired by user manager. The apps run as the Guest account. Brokers, some services and apps run as this account. In the converged user model, the multi-user-aware apps and multi-user-aware brokers will need to run in a context different from that of the users.

For this purpose, the system creates DSMA. If the domain was created with domain controllers that run Windows Server , the DefaultAccount will exist on all domain controllers in the domain. If the domain was created with domain controllers that run an earlier version of Windows Server, the DefaultAccount will be created after the PDC Emulator role is transferred to a domain controller that runs Windows Server The DefaultAccount will then be replicated to all other domain controllers in the domain.

Microsoft does not recommend changing the default configuration, where the account is disabled. There is no security risk with having the account in the disabled state.

Changing the default configuration could hinder future scenarios that rely on this account. There are many services and processes in the Windows operating system that need the capability to sign in internally, such as during a Windows installation. It is an internal account that does not show up in User Manager, and it cannot be added to any groups. For more information, see NetworkService Account.

It has minimum privileges on the local computer and presents anonymous credentials on the network. For more information, see LocalService Account. The Users folder is located in Local Users and Groups. For more information about creating and managing local user accounts, see Manage Local Users. You can use Local Users and Groups to assign rights and permissions on the local server, and that server only, to limit the ability of local users and groups to perform certain actions.

A right authorizes a user to perform certain actions on a server, such as backing up files and folders or shutting down a server. An access permission is a rule that is associated with an object, usually a file, folder, or printer. It regulates which users can have access to an object on the server and in what manner.

You cannot use Local Users and Groups on a domain controller. However, you can use Local Users and Groups on a domain controller to target remote computers that are not domain controllers on the network.



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