【问题描述】
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在向Exchange 2007组织安装Exchange 2013服务器时的“组织准备”阶段报以下错误：

[06/04/2015 02:19:29.0695] [1] [ERROR] Active Directory operation failed on EMAIL.5DMAIL.com. The object 'CN=Folder Hierarchies,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=5DMAIL,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=5DMAIL,DC=com' already exists.

[06/04/2015 02:19:29.0695] [1] [ERROR] 对象存在。

【解决方法】

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使用ADSIEDIT，将"CN=Public Folders, CN=Folder Hierarchies, CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups, CN=, CN=Microsoft Exchange, CN=Services, CN=Configuration, DC="下的msExchPFTreeType的值修改为1

【参考信息】
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https://support.microsoft.com/zh-cn/kb/954699