This article was previously published under Q264733
By default, the Exchange System Manager does not display the Security tab when you view the properties of the Organizational object. To view the Security tab, you must enable it by editing the registry.
To enable the Security tab, you must change the registry:
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows