您好！
请问该问题是什么时候出现的？之前是否正常，问题出现之前对服务器做过什么更改？
有没有尝试过在安全模式下打开服务器管理器角色选项？
从错误信息来看，指定服务器需要重新启动，请尝试重新启动服务器检查问题是否仍然存在。
此外，您也可以参阅以下服务器管理器排错指南：
很抱歉以下资料均为英文文档，供您参考。
Windows Server 2012 - Server Manager Troubleshooting Guide, Part I: Overview
http://social.technet.microsoft.com/wiki/contents/articles/13443.windows-server-2012-server-manager-troubleshooting-guide-part-i-overview.aspx
Windows Server 2012 - Server Manager Troubleshooting Guide, Part II: Troubleshoot Manageability Status Errors in Server Manager
http://social.technet.microsoft.com/wiki/contents/articles/13444.windows-server-2012-server-manager-troubleshooting-guide-part-ii-troubleshoot-manageability-status-errors-in-server-manager.aspx
Windows Server 2012 - Server Manager Troubleshooting Guide, Part III: Common Events and Errors in Server Manager
http://social.technet.microsoft.com/wiki/contents/articles/13445.windows-server-2012-server-manager-troubleshooting-guide-part-iii-common-events-and-errors-in-server-manager.aspx
Best Regards,
Alvin Wang
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windows server 2012 无法获取角色和功能数据
