您好，
exchange server 2019登录ECP总是报“无法完成您的请求，请过几分钟后重试”，且有些pst邮件导入总是失败。
log如下：
Log Name: Application
Source:
MSExchange Control Panel
Date:
2021/12/1 15:20:16
Event ID: 5
Task Category: General
Level:
Error
Keywords: Classic
User:
N/A
Computer: xxxxxxx
Description:
Current user: 'xxxxxxxxxx/Administrator'
Web service call 'xxxxxxxxx:444/ecp/DDI/DDIService.svc/GetObject?ActivityCorrelationID=dxxxxxxxxxxxxx=GetForSDO&schema=ViewUserMailboxDetails&msExchEcpCanary=xxxxxxxxxxxxxxxx failed with the following error:
System.ServiceModel.Dispatcher.NetDispatcherFaultException: The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter ECP:identity. The InnerException message was
'There was an error deserializing the object of type Microsoft.Exchange.Management.ControlPanel.Identity. End element 'RawIdentity' from namespace '' expected. Found element 'target' from namespace ''.'.
Please see InnerException for more details. ---> System.Runtime.Serialization.SerializationException: There was an error deserializing the object of type Microsoft.Exchange.Management.ControlPanel.Identity. End element 'RawIdentity' from namespace
'' expected. Found element 'target' from namespace ''. ---> System.Xml.XmlException: End element 'RawIdentity' from namespace '' expected. Found element 'target' from namespace ''.
at System.Xml.XmlExceptionHelper.ThrowXmlException(XmlDictionaryReader reader, String res, String arg1, String arg2, String arg3)
