You may see your IIS 6.0 applications failing to respond after you install Microsoft update KB 982666

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We are recently seeing lot many support cases coming our way. If you are seeing the following after installing the Microsoft update KB 982666 on a Windows Server 2003 machine:

  • IIS application pools or websites no longer starts.
  • IIS web-sites may not be able to start.
  • Rapid Fail Protection shuts down your application pools.
  • An inspection of the event logs show that the IIS worker processes are terminating unexpectedly, showing event messages similar to the following:

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 12/9/2009
Time: 10:55:01 AM
User: N/A
Computer: WEBSERVER01
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '1234'.
The process exit code was '0xffffffff'.

Please go ahead and reapply Windows Server 2003 Service Pack 2 to resolve this issue.

For more details visit the following link.