MSExchange Availability 4001

上一次修改主题： 2011-03-19

本文对特定 Exchange 事件进行了说明并提供了可能的解决方案。如果您在此处未找到所需内容，请尝试在 Exchange 2010 帮助中进行搜索。

Details

This Error event indicates that the Microsoft Exchange Autodiscover service could not discover the Exchange Availability service that is running in a remote Active Directory forest. The Exchange Autodiscover service that runs on a Front End server that is running Exchange Server 2007 or Exchange Server 2010 (also known as Exchange Client Access server) is a Web service that locates a mailbox. The Exchange Availability service is also a Web service that retrieves the Schedule+ Free Busy and Out-of-Office (OOF) data for that specific mailbox. This event may occur when an Exchange 2007 or Exchange 2010 Client Access server and user mailbox are in different Active Directory forests. Because the Exchange Autodiscover service cannot directly connect to a mailbox that resides in a remote Active Directory forest, it requests that the Exchange Availability service that is running in the remote Active Directory forest retrieve the requested information locally.

This event may occur if one or more of the following conditions are true:

• The Active Directory site or forest that contains the user mailbox does not have a local Exchange 2007 or Exchange 2010 server that runs the Exchange Availability service.

• The Exchange Availability service finds issues when it tries to connect to the remote Active Directory forest.

User Action

To resolve this error, take one or more of the following steps:

• Make sure that the Active Directory site or forest that contains the user mailbox has at least one local Exchange 2007 or Exchange 2010 server that runs the Exchange Availability service.

• Use the Ping or PathPing command-line tools to test basic connectivity. Use Ping to isolate network hardware problems and incompatible configurations. Use PathPing to detect packet loss over multiple-hop trips. For more information, see Microsoft Knowledge Base article 325487, How to troubleshoot network connectivity problems.

• Increase the diagnostic logging level of the MSExchange Autodiscover service. To do this, follow the steps shown here:

  Caution   不正确地编辑注册表时，可能导致出现严重问题，从而需要重新安装操作系统。因不正确地编辑注册表而导致出现的问题是能够解决的问题。编辑注册表之前，请备份所有重要数据。

  1. Start Registry Editor (regedit).

  2. Locate the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange Autodiscover\Diagnostics

  3. In the results pane, change the Value data of all keys (except Default) to 5.

  4. Exit Registry Editor.

• Review other related Warning events and Error events in the Application and System log. These related events may help you find the root cause of this event.

If you cannot resolve this error using the options suggested here, contact Microsoft Product Support Services. For more information, visit the Microsoft Help and Support Web site.

For More Information

如果您尚未执行此操作，请考虑运行 Exchange 工具，已创建这些工具以帮助您分析 Exchange 环境并对其进行疑难解答。这些工具可帮助确保您的配置与 Microsoft 最佳实践保持一致。它们还可以帮助您识别和解决性能问题，并改进邮件流。若要运行这些工具，请转到 Exchange 管理控制台的“工具箱”节点。若要了解有关这些工具的详细信息，请参阅管理工具箱中的工具。