Hi I am receiving below warning message while running Add-MailboxPermission cmdlet and Remove-MailboxPermission cmdlets. I did some research with this error but couldn't figure-out the exact problem. One thing I could notice is, this is happening only from a few servers. This problem may be server specific. Anyone experienced similar thing or have any suggestions to understand this warning message? WARNING: The cmdlet extension agent with the index 0 has thrown an exception in OnComplete(). The exception is: System.InvalidOperationException: Operation is not valid due to the current state of the object. at Microsoft.Exchange.Data.Storage.ExchangePrincipal.get_ServerFullyQualifiedDomainName() at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(MapiStore linkedStore, LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags, GenericIdentity auxiliaryIdentity) at Microsoft.Exchange.Data.Storage.MailboxSession.<>c__DisplayClass12.<CreateMailboxSession>b__10(MailboxSession mailboxSession) at Microsoft.Exchange.Data.Storage.MailboxSession.InternalCreateMailboxSession(LogonType logonType, ExchangePrincipal owner, CultureInfo cultureInfo, String clientInfoString, IAccountingObject budget, Action`1 initializeMailboxSession, InitializeMailboxSessionFailure initializeMailboxSessionFailure) at Microsoft.Exchange.Data.Storage.MailboxSession.CreateMailboxSession(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags, CultureInfo cultureInfo, String clientInfoString, PropertyDefinition[] mailboxProperties, IList`1 foldersToInit, GenericIdentity auxiliaryIdentity, IAccountingObject budget) at Microsoft.Exchange.Data.Storage.MailboxSession.ConfigurableOpen(ExchangePrincipal mailbox, MailboxAccessInfo accessInfo, CultureInfo cultureInfo, String clientInfoString, LogonType logonType, PropertyDefinition[] mailboxProperties, InitializationFlags initFlags, IList`1 foldersToInit, IAccountingObject budget) at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsSystemService(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.ProvisioningAgent.MailboxLoggerFactory.XsoMailer.Log(AdminLogMessageData data, LogMessageDelegate logMessage) at Microsoft.Exchange.ProvisioningAgent.AdminLogProvisioningHandler.OnComplete(Boolean succeeded, Exception e) at Microsoft.Exchange.Provisioning.ProvisioningLayer.OnComplete(Task task, Boolean succeeded, Exception exception) Thanks, Sitaram Pamarthi Blog : http://techibee.com Follow on Twitter This posting is provided AS IS with no warranties or gurentees,and confers no rights

Hello, Could you explain more detail for your question? What is your meaning of "this is happening only from a few servers"? If you mean this issue only occur on some servers, did you use the same account to logon the servers? You also can run this command to have a try: Set-AdminAuditLogConfig -AdminAuditLogEnabled $False Thanks, EvanEvan Liu TechNet Community Support

Apologies for not being clear. >What is your meaning of "this is happening only from a few servers"? From a few servers where Exchange Management tools installed. >If you mean this issue only occur on some servers, did you use the same account to logon the servers? Yes, I used the same account. I will try your Set-AdminAuditLogConfig suggestion and update the details here.Thanks, Sitaram Pamarthi Blog : http://techibee.com Follow on Twitter This posting is provided AS IS with no warranties or gurentees,and confers no rights

Evan, I think I don't want to change the AdminAudit level as that is something global and affects everyone. While troubleshooting the issue, I noticed that, this warning message is appearing only if I try from a powershell window with Exchange Snap-in(Microsoft.Exchange.Management.PowerShell.E2010) added. I am not seeing any warnings when running the same command from Exchange Management Shell with same login on same host. Is this anything to do with the Exchange Snap-in? Exchange Shell uses different interface to talk to Exchange? Please advise.Thanks, Sitaram Pamarthi Blog : http://techibee.com Follow on Twitter This posting is provided AS IS with no warranties or gurentees,and confers no rights