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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows registry
After you move a mailbox from a server that is running Microsoft Exchange Server 5.5 or Microsoft Exchange 2000 Server to a server that is running Microsoft Exchange Server 2003 Service Pack 1 (SP1) or Microsoft Exchange Server 2003 Service Pack 2 (SP2), you may experience the following symptoms.
Exchange 2003 SP2When the user of the migrated mailbox uses Microsoft Outlook, the user may experience the following symptoms:
Exchange 2003 SP1When the user of the migrated mailbox uses Outlook, the user may experience the following symptoms:
This issue may occur because of a difference in the value of the GUID-Replid mapping (GRM) in memory and the value of the GRM in the mailbox database.
To resolve this issue, use the following methods, as appropriate for your situation.
To prevent this issue, you can use method 1. If you already experience the symptoms that are described in this "Symptoms" section, and if you cannot perform the steps in method 1, you can perform the steps in method 2 to resolve this issue.
Method 1: How to prevent Outlook from crashingNote If Outlook has already crashed, you can try to move the mailbox back to the original store. Then, follow the steps that are included in this method.
To prevent Outlook from crashing, you must configure a registry entry before you move the mailbox. The newly configured registry entry will turn off the GRM cache for the target mailbox store that will contain the migrated mailbox. This registry entry must be configured for every target mailbox store before you perform the migration. To do this, follow these steps.
Step 1: Determine the GUID values for the mailbox stores
Step 2: Add the Guid-Replid Caching registry entryWarning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
Step 3: Move the mailboxesMove the mailboxes to the Exchange 2003 server.
Step 4: Modify the Guid-Replid Caching registry entryAfter you complete the migration of the mailboxes and verify that users can perform all tasks in Outlook as expected, turn on GRM caching. To do this, change the value of the Guid-Replid Caching registry entry to 1.
Method 2: Manually resolve the issueThis problem can sometimes be resolved by dismounting and then mounting the affected store or by restarting the Microsoft Exchange Information Store service.
However, the display of duplicate folders, issues with delegates, or issues with the display of free/busy information may not be resolved when you dismount and then mount the affected store. In these cases, you must resolve these issues manually.
Step 1: Dismount and then mount the affected storeDismount and then mount the affected store. Alternatively, restart the Microsoft Exchange Information Store service. If this does not resolve all issues, complete the rest of the steps this method.
Step 2: Turn off Cached Exchange Mode in Outlook 2003Delete the Cached Exchange Mode .ost file. You must delete the Cached Exchange Mode .ost file for a user on that user's computer. This file is located in the following folder:
Drive_Letter:\Documents and Settings\User_ID\Local Settings\Application Data\Microsot\Outlook\Outlook.ostNote To view this file, you must enable the Show hidden files and folders option and disable the Hide protected operating system files (Recommended) option in the Folder Options dialog box.
Step 3: Use the /resetfolders switch to start Outlook
Step 4: Turn on Cached Exchange ModeTurn on Cached Exchange Mode in Outlook.
Other issues to consider when you move mailboxesThere are several issues to consider when you move mailboxes to Exchange 2003. The following sections describe some of the issues that you may encounter depending on the environment in which you perform a migration.
Exchange 5.5 mailboxes moved to Exchange 2003When you migrate Exchange 5.5 mailboxes to Exchange 2003, you may experience the following behavior.
ANSI mode profileIf the Outlook profile was created against Exchange 5.5, the profile is created in the ANSI mode instead of in the typical Unicode mode that is used in Exchange 2003. This will cause the client to download offline address book, version 2 or an earlier version of the offline address book. To resolve this behavior, you must create a new profile and then remove the old profile. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/829918/ )How to create a new e-mail profile in Outlook 2007 and in Outlook 2003
The offline address book does not reflect correct informationWhen a client uses Cached Exchange Mode, the offline address book will reflect outdated information after the mailbox is moved. This behavior occurs until the client downloads an updated offline address book. To work around this behavior, the client can be configured to use online mode. For more information about how to use the online global address list (GAL), click the following article number to view the article in the Microsoft Knowledge Base:
831124However, using the online GAL does not help if there is a change to user information that is already represented in the offline address book. In this case, you can use the Exchange Profile Update Tool (Exprofre.exe) to delete the existing offline address book. The client uses online Ambiguous Name Resolution (ANR) address resolution until a new offline address book is downloaded. Be aware that network performance may deteriorate during offline address book downloads. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/831124/ )How to force Outlook 2007 or Outlook 2003 to resolve proxy addresses and custom properties in Cached Exchange Mode
(http://support.microsoft.com/kb/873214/ )The Exchange Profile Update tool
Cross-site moveWhen you perform a cross-site move, Outlook profiles may not work correctly for a mailbox. The Exchange Profile Update (ExProfRe) tool can help solve issues in cross-site moves. ExProfRe performs the following tasks:
Same-site moveIf it is possible, leave the source server online until all clients log on for the first time after the move.
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/843104/ )Overview of the Site Consolidation feature in Exchange Server 2003 Service Pack 1
(http://support.microsoft.com/kb/224975/ )Differences between move mailbox methods
(http://support.microsoft.com/kb/328810/ )Moving mailboxes between servers
906559For more information about how to configure Unicode options for Outlook 2003, visit the following Microsoft Web site:
(http://support.microsoft.com/kb/906559/ )Information about the changes that occur to the Offline Address Book after you install Outlook 2003 SP2 and Exchange Server 2003 SP2