During startup, the error message Missing or Corrupt LSASS
is displayed. The computer halts and stops responding.
The Sasser worm virus exploits the Local Security Authority Subsystem Service (LSASS) vulnerability in Windows XP.
Microsoft Security Update MS04-011 released on 13 April 2004 addresses this issue. The links below will take you to tools and information provided by Microsoft and Symantec to assist in the removal of and protection against any further Sasser virus attacks.