Exchange 2007 errors - cgi.dll

Hi Experts,

on one of my HUB CAS servers I have many entires in my eventlog.
Each second I get this error:
Fehler beim Laden der Modul-DLL C:\Windows\System32\inetsrv\cgi.dll. Die Daten enthalten Fehlerinformationen.
It is event ID 2280.

Please can you help me to fix ?
Eprs_AdminSystem ArchitectAsked:
Who is Participating?
Michael PfisterConnect With a Mentor Commented:
Please also post the data portion of this event.
Also check if the file C:\Windows\System32\inetsrv\cgi.dll exists and if yes which version it displays.
Eprs_AdminSystem ArchitectAuthor Commented:
CGI.dll wasn´t in the directory.
I copied over from my second HUB CAS server.
Eprs_AdminSystem ArchitectAuthor Commented:
another dll was also missing.
The DefaultAppPool crashed again. Do I need the this pool for Exchange ?
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Eprs_AdminSystem ArchitectAuthor Commented:
Here two DLLs were missed in the directory.
After copying the DLLs from another HUB CAS server to the faulty one, it worked.

Then we added the HUB CAS server again to our NLB.
This also worked fine.
Michael PfisterCommented:
Great! Glad it helped.
Wonder how the DLLs disappeared/got corrupted
Eprs_AdminSystem ArchitectAuthor Commented:
maybe from P2V migration.
I have mentioned this from other servers too.
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