IIS5.1 Service failed to start error 127

The first installation IIS5.1 successful, and smooth localhost A, the next day again localhost is an error.

Go to Control Panel----management tools----Internet Information Services, find the local computer----Web site----Default Web site (stopped), the problem is here; Access to Control Panel----Administration Tools----Services, Discovery Services Options IIS Admin starts normally, However, the world Wide Web Publishing item that relies on this service is in a stopped state, after you start the service, then go to Control Panel----Administration Tools----Internet Information Services, and right click on the "startup" Default Web site, OK. If the world Wide Web Publishing service does not start properly, go to Control Panel-Remove the update file patch KB939373 in the Add removal program. A security patch to prevent remote control of the local system via IIS ~

Security Update for Windows XP (KB939373) Brief Description A security issue has been identified this could allow A attacker to remotely compromise your windows-based system using I Nternet Information Services (IIS) and gain control over it. An error message also occurs after installing security update 931212 (ms07-040) in Windows Service Pack 4: "Error 127:the specified procedure could not to be found" (wrong Error 127: The specified program could not be found