XADM: Changes to Primary Windows NT Account on Mailbox Do Not Take Effect

ID: Q179065

The information in this article applies to:

Microsoft Exchange Server, version 5.5

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 the primary Windows NT account for a mailbox is changed, the new primary Windows NT account does not have immediate access to the mailbox and the previous primary Windows NT account still maintains access for some period of time.

This problem may also occur after a move mailbox operation.

CAUSE

The information store caches information contained in the directory store and, by default, it re-reads it every 120 minutes. Therefore, any change to a directory object (for example, a primary Windows NT account change) is not reflected in the information store for two hours.

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).

To have changes to directory objects picked up immediately by the information store, follow these steps:

Run Registry Editor (Regedt32.exe).

Go to the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\Parame tersSystem

On the Edit menu, click Add Value.

Enter Mailbox Cache Age Limit for the Value name.

Enter REG_DWORD for the Data type.

Enter 1 for the Data of type HEX, and then click OK.

NOTE: This registry entry is not a switch, or toggle, it is a setting. If it is set to 1 the server rereads the cache every minute, if it is set to 2 the server rereads the cache every 2 minutes, and so forth.

Stop the information store service.

Restart the information store service.

The information store now updates its mailbox cache frequently by rereading the directory every minute.

STATUS

In Microsoft Exchange Server 4.0 and 5.0, the information store rereads the directory every time there is a change to a directory object. This process was not optimized and did not offer the best performance. In an effort to optimize performance, Microsoft Exchange Server 5.5 caches the directory information and rereads the directory every two hours by default.

Additional query words: resources ntaccount permissions Delay

Keywords : XADM exc55
Version : winnt:5.5
Platform : winnt
Issue type : kbbug