- OS: Windows 2000 Advanced Server
- ADS: Yes
- DNS: Yes
- IIS: Yes
- MS/SQL2000: Yes

I ran Service Pack# 4 today and it died right around the "Registry Update
step". It gave a Red X
dialog saying "A required DLL not found".

1. I clicked "OK". Another Red X dialog was displayed saying: "Cannot remove
ISM.DLL script file".
2. I reboot the server and the system applet reported that "Service Pack 4"
is in the system.
3. My system is booting normally after this. I have not checked any services
yet.
4. I then downed all the services (which I normally never do while applying
service packs) and reapplied service pack 4 and I got the same result.

This is the 1st Windows service pack that failed on me (I have successes
with all NT 4.0 svcps, Windows 2000 Sp1-3, Win XP sp1-1a)

Below is the last part of the "svcpack.log":
**************************************************************************

Starting process:  C:\WINNT\system32\sp4iis.exe -l
***
 Return Code = 1003
***
DoInstallation:RunInfProcesses for ProcessesToRun Failed
***
Service Pack 4 Setup encountered an error:  An error in updating your system
has occurred.
***
Failed Deleting C:\WINNT\system32\msiinst.tmp  2
***
VerifySize: Unable to verify size: Source = NULL: c:\winnt\oem21.cat
***
An error in updating your system has occurred.

Windows 2000 has been partially updated and may not work properly.  It is
recommended that you use your Emergency Repair disk to repair your system.
To do this, insert the Windows 2000 Setup Boot Disk into the floppy drive,
restart your computer, and then select the Emergency Repair option.
***

Message displayed to the user: An error in updating your system has
occurred.

Windows 2000 has been partially updated and may not work properly.  It is
recommended that you use your Emergency Repair disk to repair your system.
To do this, insert the Windo
***

User Input: OK
***

************************End Of Log***************************

Thanks for your help,