Security Accounts Manager (SamSs) Service Defaults in Windows 7

The startup of this service signals other services that the Security Accounts Manager (SAM) is ready to accept requests. Disabling this service will prevent other services in the system from being notified when the SAM is ready, which may in turn cause those services to fail to start correctly. This service should not be disabled.

Default Settings

Startup type: Automatic
Display name:Security Accounts Manager
Service name:SamSs
Service type:share
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SamSs

Default Behavior

Security Accounts Manager is a Win32 service. In Windows 7 it is starting automatically on the operating system startup. Then the Security Accounts Manager service is running as LocalSystem in a shared process of lsass.exe. Other system components, such as drivers and services, may run in the same process. If Security Accounts Manager fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the SamSs service is not running because of the error.


Security Accounts Manager is unable to start, if the Remote Procedure Call (RPC) service is stopped or disabled.

If Security Accounts Manager is stopped, the following services cannot start:

Restore Default Startup Configuration of Security Accounts Manager

Before you begin doing this, make sure that all the services on which Security Accounts Manager depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config SamSs start= auto
sc start SamSs

3. Close the command window and restart the computer.

The SamSs service is using the lsass.exe file that is located in the C:\Windows\system32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.