Microsoft KB Archive/258584

= OL2000: (IMO) Outlook Stops Responding When You Switch Between IMAP Folders =

Article ID: 258584

Article Last Modified on 10/13/2005

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APPLIES TO


 * Microsoft Outlook 2000 Standard Edition

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This article was previously published under Q258584



NOTE: These procedures only apply if you have installed Outlook with the Internet Mail Only option. To determine your installation type, click About Microsoft Outlook on the Help menu. If you have the Internet Mail Only option installed, you see "Internet Mail Only".

For information about the differences between Microsoft Outlook and Microsoft Outlook Express e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:

257824 OL2000: Differences Between Outlook and Outlook Express



SYMPTOMS
When you use Outlook in IMO mode and switch quickly between moderately populated folders on an Internet Messaging Access Protocol (IMAP) server, Outlook may stop responding. You may see one of the following messages on the Outlook Status bar:

Updating cached messages

-or-

Fetching new headers

Outlook stops responding more frequently when you switch between folders that are heavily populated with e-mail messages.



CAUSE
This problem occurs because there are two threads that have collided and are at a standstill because they are both waiting for the other thread to finish its operation; one of the threads is working with IMAP fetch responses from the server, and the other thread is trying to switch folders.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English-language version of this fix should have the following file attributes or later:   Date        Time    Version      Size     File name --  03/30/2000  12:01a  9.0.3929.0   368,691  pstprx32.dll 04/25/2000 04:24p               3,022    readme.txt



WORKAROUND
To temporarily work around this problem, wait for all headers and cached information to be updated before you switch folders.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: OL2K Fetch Cached

Keywords: kbbug kbfix kbqfe kboffice2000presr2fix kbhotfixserver KB258584

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