Active Directory Error 0x51 occurred when trying to check the suitability of server ''. Error: 'Active directory response: The LDAP server is unavailable'. It was running the command

Active Directory Error 0x51 occurred when trying to check the suitability of server '<servername>'. Error: 'Active directory response: The LDAP server is unavailable'. It was running the command


描述:
(PID 7988，執行緒 77) 在處理索引 0 的記錄時發生工作 Get-Recipient 寫入錯誤。錯誤: Microsoft.Exchange.Data.Directory.SuitabilityDirectoryException: 嘗試檢查伺服器 'directory.xxx.com.tw' 適用性時發生 Active Directory 錯誤 0x51。錯誤：'Active Directory 回應: LDAP 伺服器無法使用。' ---> System.DirectoryServices.Protocols.LdapException: LDAP 伺服器無法使用。

http://support.microsoft.com/default.aspx?scid=kb;en-us;2019500&sd=rss&spid=13965


解決方法：

Go to the following location and delete the Exchange Management Console file.

C:\users\\AppData\Roaming\Microsoft\MMC\Exchange Management Console

Close EMC and Reopen it.

NOTE: Be aware, that You may loose certain filtering preconfigurations You made for that user.