When you use Microsoft Office Outlook 2003 to connect to a Microsoft Exchange Server 2003 e-mail server by using a remote procedure call (RPC) over HTTP, Outlook 2003 may perform slowly or stop responding (hang).

Back to the top

This issue may occur in one or both of the following scenarios:

•	The Bypass proxy server for local addresses check box is selected in the Microsoft Internet Explorer options, and the HTTP connection to your Exchange Server 2003 e-mail server can be made through the HTTP proxy server on the network that you are connected to.
•	Outlook 2003 has issued a local RPC call that is waiting for a remote RPC call to complete. This problem is more noticeable when you are using a slow network connection.

Back to the top

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Back to the top

Hotfix information

To resolve this problem, download the 331320 update package from the Microsoft Windows Update Catalog or the Microsoft Download Center. For additional information about how to download updates from the Windows Update Catalog, click the following article number to view the article in the Microsoft Knowledge Base: The following file is available for download from the Microsoft Download Center:

Back to the top

Microsoft Windows XP Professional and Windows XP Home Edition

Download the 331320 package now (http://microsoft.com/downloads/details.aspx?FamilyId=8670CFF6-3D95-496E-8DF4-13D8F38715FA&displaylang=en)

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date         Time   Version            Size    File name
---------------------------------------------------------
25-Nov-2002  18:59  5.1.2600.1142     505,856  Rpcrt4.dll

Back to the top

Microsoft Windows XP 64-Bit Edition

Download the 64-Bit 331320 package now (http://microsoft.com/downloads/details.aspx?FamilyId=97375754-B0A5-4902-97DD-5DA22A5AEE1B&displaylang=en)

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date         Time   Version            Size    File name
--------------------------------------------------------------------
25-Nov-2002  18:59  5.1.2600.1142   2,297,856  Rpcrt4.dll       IA64
09-Nov-2002  07:40  5.1.2600.1142     506,880  Wrpcrt4.dll      X86

Back to the top

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows XP Service Pack 2.

Back to the top

Outlook 2003 supports connections to Exchange Server 2003 by using RPC over HTTP. Therefore, you are less likely to need a virtual private network (VPN) connection when you use Outlook 2003 with Windows Server 2003.

For additional information about how to install multiple hotfixes with only one restart, click the following article number to view the article in the Microsoft Knowledge Base:

Back to the top