Content Frame displays : "Loading"

[Asaph]

Whenever I use Microsoft Internet Explorer version 5.0 or later in order to access Outlook Web Access (OWA) in Microsoft Exchange 2000 Server or in Microsoft Exchange Server 2003, I receive the following message in the contents frame of OWA instead of the message list that I expect:
Loading ...

Why ? What can be the reason for getting such a message ?
any ideas .......

[Jackson2]

There can be number of reasons behind getting such a message.
Some of them are -

• Internet Explorer version 5.0 and later supports HTTP-DAV. Distributed Authoring Version (DAV) uses Hypertext Transfer Protocol (HTTP) verbs that your proxy server or firewall does not recognize.
  Additionally, your proxy or firewall solution does not permit you to customize the list of approved HTTP verbs.
  
• A language is not specified in the Internet Explorer language preferences.
  
• A logic error has occurred in the server-side scripting code for OWA. This problem occurs when OWA performs an HTTP GET request that has the Translate header set to f (false).
  
• Your Exchange server is behind Microsoft Proxy Server 2.0, and the proxy server has not been configured to publish the Exchweb directory.

[Trio]

One of the main reasons of getting "loading" message is - If placeholder images appear where your toolbar buttons and icons typically appear.
This behavior may be cause by either of the following scenarios:

1. The permissions for the Exchsrvr\Exchweb folder are incorrect.
2. The Exchweb virtual directory in Internet Services Manager is not configured correctly or is missing virtual directories such as the Img virtual directory and the Views virtual directory.
3. The Require secure channel (SSL) check box is selected on the Exchweb virtual directory in Microsoft Internet Information Services (IIS) on the back-end Exchange computer.

[deveritt]

Your Exchange computer was upgraded from Microsoft Windows Server 2000 to Microsoft Windows Server 2003 and URLScan was installed and configured before the upgrade.
URLScan is not required for IIS 6.0 and can cause problems that are consistent with these symptoms.
URLScan 2.5 is the only version that Microsoft supports for use with IIS 6.0.

You may see "Loading" in the Inbox pane if the user has changed the security zone settings in Internet Explorer.
If the OWA Web site, (such as mail.domain.com), has been added to a security zone, such as "Trusted Sites," in Internet Explorer, and if the Active scripting option has been disabled for that security zone, you will see "Loading" in the Inbox pane in OWA after you authenticate. If integrated authentication is enabled, you will not be prompted for credentials, and you will immediately see "Loading".