Exchange 2013 DCOM Event ID 10028

Question

I am running two virtual Exchange 2013 Std servers (CAS and MBX on both) on Server 2012 Std in two different sites (no DAG...yet). When connecting from EX01 through ECP or EMS and I try to retrieve configuration for something from the other server (EX02)
it will take up to 5 minutes before I get the information and the System Event viewer will have the following:
Log Name:      System
Source:        Microsoft-Windows-DistributedCOM
Date:          8/21/2013 9:08:47 AM
Event ID:      10028
Task Category: None
Level:         Error
Keywords:      Classic
User:          SYSTEM
Computer:      EX02.domain.com
Description:
DCOM was unable to communicate with the computer EX02.domain.com using any of the configured protocols; requested by PID     26ec (c:\windows\system32\inetsrv\w3wp.exe).
Event Xml:
<Event xmlns="http :// schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-DistributedCOM" Guid="{1B562E86-B7AA-4131-BADC-B6F3A001407E}" EventSourceName="DCOM" />
    <EventID Qualifiers="0">10028</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2013-08-21T14:08:47.915595500Z" />
    <EventRecordID>15029</EventRecordID>
    <Correlation />
    <Execution ProcessID="744" ThreadID="19976" />
    <Channel>System</Channel>
    <Computer>EX02.domain.com</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="param1">EX02.domain.com</Data>
    <Data Name="param2">    26ec</Data>
    <Data Name="param3">c:\windows\system32\inetsrv\w3wp.exe</Data>
    <Binary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inary>
  </EventData>
</Event>
This error can be repeatedly triggered with no problem. If I'm on EX01 on EMS and run:
Get-OWAVirtualDirectory -Server EX02
it will take nearly 4 minutes before I get the details and the System Event ID 10028 DistributedCOM will appear on EX01. Same occurs if I reverse the process from EX02. I have turned off the Windows Firewall to see if that makes a difference - no change.
I have remove AV from both servers - no change.
Any ideas will be appreciated.
~Rick

Answer 1

Having the same setup and running in the same problem. Remote-Powershell doesn't work properly. Any remote query needs minutes.
Two Exchange Server 2013 STD on Windows Server 2012, both with MBX & CAS (no DAG), placed in two different sites. CU2 is installed, the system is fully patched. The sites are connected over a IPSec-Tunnel with a acceptable RTT of 50 to 150ms. The Firewall
in between is open for the whole Servernetwork-Segments. The local Windows Firewall is deactivated by GPO. I can portping all needed ports (TCP/80,443,5985) on remote system with success. AutoDiscover is working properly, the Test-Outlook-Clients can connect
automatically to the server, in each site localy. Im using on both servers SAN-Certificates, created on the internal MS-CA. The external part does not exist until now, but there will be a reverse proxy (netscaler) with the official SAN-Certificate, on both
sites with separate internet access.
Another issue is very strange and I don't understand what causes that behavior: The administrators mailbox is on SRV1. When I connect to ECP over "https://fqdnOfSRV1/ECP/" works perfect. But when I connect over "https://fqdnOfSRV2/ECP/" to the same mailbox,
which is on SRV1, the IIS redirects me to the WebApp of administrator. I did test it inverse and using a administrator2 account, which is on a DB on SRV2. Same issue when I connect over SRV1.
I have much more issues and hope some of them will be addressed with CU3.
Did you have any update on this case?
Regards
Patrick