Windows XP Services

NT LM Security Support Provider - Windows XP Service

Provides security to remote procedure call (RPC) programs that use transports other than named pipes.

This service exists in Windows XP only.

Startup Type

Windows XP edition without SP SP1 SP2 SP3
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Default Properties

Display name:NT LM Security Support Provider
Service name:NtLmSsp
Error control:normal

Default Behavior

The NT LM Security Support Provider service runs as LocalSystem in a shared process. It shares the executable file with other services. If the NT LM Security Support Provider fails to load or initialize, the error is recorded into the Event Log. Windows XP startup should proceed, but a message box is displayed informing you that the NtLmSsp service has failed to start.


If the NT LM Security Support Provider is stopped, the Telnet fails to start and initialize.

Restore Default Startup Type of NT LM Security Support Provider

Automated Restore

1. Select your Windows XP edition and Service Pack, and then click on the Download button below.

2. Save the RestoreNTLMSecuritySupportProviderWindowsXP.bat file to any folder on your hard drive.

3. Run the downloaded batch file.

4. Restart the computer to save changes.

Note. Make sure that the lsass.exe file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows XP installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.