[Today's post comes to us courtesy of Justin Crosby, David Santamaria, and Damian Leibaschoff]
Users may receive the following error when access /EXCHANGE or /PUBLIC on an SBS 2008 server. Users can still access OWA using the /OWA path. Note: SBS 2008 users should always use /OWA or RWW to access OWA. This issue is a very rare issue, but if encountered can take a very long time to troubleshoot.
Error Summary
HTTP Error 500.0 - Internal Server Error
The page cannot be displayed because an internal server error has occurred.
Detailed Error Information:
Module IsapiModule
Notification ExecuteRequestHandler
Handler AboMapperCustom-2575299
Error Code 0x80004005
Requested URL https://localhost:443/exchange
Physical Path \\.\BackOfficeStorage\domain.local\MBX
Logon Method Negotiate
You may also see the following event in the application event log:
Log Name: Application
Source: DAVEX
Date: 2/26/2009 3:47:04 PM
Event ID: 101
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: server.domain.local
Description:
DAVEX to be shutdown. Version: 8.1.240.5
This issue can occur if the HKLM\SYSTEM\CurrentControlSet\Services\InetInfo\Parameters registry key is missing. To resolve this issue recreate the key and restart IIS.