lync 和 exchange 2010 整合手记之The RPC server is unavailable. 0x800706ba

 真是喝冷水都塞牙，申请个证书报错了，看看如下错误

 

Request Mode:

newreq - New Request 

Disposition:

(never set) 

Disposition message:

(none) 

Result:

The RPC server is unavailable. 0x800706ba (WIN32: 1722) 

COM Error Info:

CCertRequest::Submit: The RPC server is unavailable. 0x800706ba (WIN32: 1722) 

LastStatus:

The operation completed successfully. 0x0 (WIN32: 0) 

Suggested Cause:

This error can occur if the Certification Authority Service has not been started
 

最后一句话说明很简单，CA 服务器上启动服务吧，

登录一看，果然服务down了，启动，我再启动，还是不生效，看看错误提示：
Active Directory Certificate Services did not start: It Could not load or verify the current CA certificate. COE Lab Root CA Object was not found. 0x80090011 (-2146893807).

使用备份的CA恢复，能够重新启动了，

看看网上讨论这个问题还蛮多，不是私钥出问题就是证书出问题

只不过大多都是重新安装CA了事，谁让你平时不做CA 备份：），所以这里主要提醒的就是现在微软服务器用证书的会越来越多，定期备份CA 绝对是个好习惯，有空也可以参考这个KB，找微软要HOTFIX。