After publishing Exchange Server 2010 SP1 (particularly Outlook Anywhere), you may have the following event logged on the Application event log in your UAG server:
Log Name: Application
Source: Microsoft Forefront UAG
Date: 21/11/2010 20:24:14
Event ID: 24
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: <UAG Server>
Description:
The request from user <user name> at source IP address <IP address> to trunk portal; Secure=1 failed because the request was unable to reply to an HTTP 401 request from application Outlook Anywhere – EWS of type EWS. The session ID is A8ADD7CE-387C-470E-A38F-39D70F608CA8.
To solve this, open the Outlook Anywhere EWS application from your trunk:
Go to the Web Servers tab and change the default paths which were automatically defined:
- /OAB/ >> /OAB.*
- /EWS/ >> /EWS.*
- /UnifiedMessaging/ >> /UnifiedMessaging.*