XCLN: Problem Opening Attachments with Netscape Navigator

ID: Q195113

The information in this article applies to:

Microsoft Exchange Server, versions 5.5, 5.5 SP1, 5.5 SP2

IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

If you use Netscape Navigator 3.x or 4.05 to check e-mail messages on Exchange Server computers, Navigator is unable to open attachments. When you attempt to open the attachment, a Save As dialog box appears. Your only option is to save the file and open it later.

CAUSE

Although Internet Explorer can open attachments properly based on file extensions, Netscape Navigator requires that the correct content type be specified. If the server does not have the association of the content type with an extension in the registry, then Navigator does not get this information. An example of the association in the registry is .DOC = application/msword.

WORKAROUND

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

For problems with Microsoft Word document attachments, ensure that the following registry subkey and value exist:

HKEY_CLASSES_ROOT\.doc

Value Name: Content Type
Value Data: application/msword

Because the problem is not specific to attachments with the .doc extension, you need to ensure that other extension types are defined in the following subkey:

HKEY_CLASSES_ROOT \extension type

After you add the value above, you need to restart your computer. Stopping and restarting the Exchange Server services and Web services does not work.

Failure to restart results in ASP 0115 errors in the client after the change has been made in the registry.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5.

Additional query words: OWA

Keywords : exc55 exc55sp1 exc55sp2
Version : winnt:5.5,5.5 SP1,5.5 SP2
Platform : winnt
Issue type : kbprb