Failure installing SP3 on Exchange 2010

Question

Good evening,
Following TechNet closely I'm currently in the process of moving my exchange 2010 environment to 2013.  I have single exchange server on a SBS 2011 box.  Sadly I've failed at the first hurdle installing SP3, the result is that my Exchange 2010
is refusing all client connections.
During the SP3 install I passed all prerequisites but during the actual upgrade it failed at the Hub Transport Role with the following error:
Summary: 8 item(s). 3 succeeded, 1 failed.
Elapsed time: 00:20:46
Language Files
Completed
Elapsed Time: 00:10:25
Restoring services
Completed
Elapsed Time: 00:00:02
Languages
Completed
Elapsed Time: 00:03:32
Hub Transport Role
Failed
Error:
The following error was generated when "$error.Clear();
          Write-ExchangeSetupLog -Info "Creating SBS certificate";
          $thumbprint = [Microsoft.Win32.Registry]::GetValue("HKEY_LOCAL_MACHINE\Software\Microsoft\SmallBusinessServer\Networking", "LeafCertThumbPrint", $null);
          if (![System.String]::IsNullOrEmpty($thumbprint))
            Write-ExchangeSetupLog -Info "Enabling certificate with thumbprint: $thumbprint for SMTP service";
            Enable-ExchangeCertificate -Thumbprint $thumbprint -Services SMTP;
            Write-ExchangeSetupLog -Info "Removing default Exchange Certificate";
            Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"} | Remove-ExchangeCertificate;
            Write-ExchangeSetupLog -Info "Checking if default Exchange Certificate is removed";
            $certs = Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"};
            if ($certs)
              Write-ExchangeSetupLog -Error "Failed to remove existing exchange certificate"
          else
            Write-ExchangeSetupLog -Warning "Cannot find the SBS certificate";
        " was run: "The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.".
The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
Click here for help...
http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.123.3&e=ms.exch.err.Ex88D115&l=0&cl=cp
Elapsed Time: 00:06:46
Client Access Role
Cancelled
Mailbox Role
Cancelled
Management Tools
Cancelled
Finalizing Setup
Cancelled
The setup log shows the following details:
Ending processing Get-ExchangeCertificate
[07/31/2013 20:50:46.0516] [1] The following 1 error(s) occurred during task execution:
[07/31/2013 20:50:46.0516] [1] 0.  ErrorRecord: The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0516] [1] 0.  ErrorRecord: System.InvalidOperationException: The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0531] [1] [ERROR] The following error was generated when "$error.Clear();
          Write-ExchangeSetupLog -Info "Creating SBS certificate";
          $thumbprint = [Microsoft.Win32.Registry]::GetValue("HKEY_LOCAL_MACHINE\Software\Microsoft\SmallBusinessServer\Networking", "LeafCertThumbPrint", $null);
          if (![System.String]::IsNullOrEmpty($thumbprint))
            Write-ExchangeSetupLog -Info "Enabling certificate with thumbprint: $thumbprint for SMTP service";
            Enable-ExchangeCertificate -Thumbprint $thumbprint -Services SMTP;
            Write-ExchangeSetupLog -Info "Removing default Exchange Certificate";
            Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"} | Remove-ExchangeCertificate;
            Write-ExchangeSetupLog -Info "Checking if default Exchange Certificate is removed";
            $certs = Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"};
            if ($certs)
              Write-ExchangeSetupLog -Error "Failed to remove existing exchange certificate"
          else
            Write-ExchangeSetupLog -Warning "Cannot find the SBS certificate";
        " was run: "The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.".
[07/31/2013 20:50:46.0531] [1] [ERROR] The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0531] [1] [ERROR-REFERENCE] Id=SbsBridgeHeadComponent___6464a0ee0fd04f6b893a3c81d7eb3f26 Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup\SBS
[07/31/2013 20:50:46.0531] [1] Setup is stopping now because of one or more critical errors.
[07/31/2013 20:50:46.0531] [1] Finished executing component tasks.
[07/31/2013 20:50:46.0594] [1] Ending processing Install-BridgeheadRole
 My application event log is flooded with the following error:
Log Name:      Application
Source:        Microsoft-Windows-IIS-W3SVC-WP
Date:          31/07/2013 21:59:43
Event ID:      2280
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      SRV-SBS.lawrencedavid.local
Description:
The Module DLL C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll failed to load.  The data is the error.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-IIS-W3SVC-WP" Guid="{670080D9-742A-4187-8D16-41143D1290BD}" EventSourceName="W3SVC-WP" />
    <EventID Qualifiers="49152">2280</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-07-31T20:59:43.000000000Z" />
    <EventRecordID>975085</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>Application</Channel>
    <Computer>SRV-SBS.lawrencedavid.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="ModuleDll">C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll</Data>
    <Binary>05000000</Binary>
  </EventData>
</Event>
I've tried to re-register exppw.dll following instructions in the TechNet forums but this hasn't helped to restore functionality or complete the SP3 installation.  Any guidance would be most appreciated.  Thanks in advance!

Answer 1

Hi RicChapman,
From the event log files, I recommend you do as follows to check the result.
1.disabling all the exchange services
2.clearing both the apps and system logs
3.restarting the server
4.reinstall the Exchange 2010 SP3
Here are some case threads for your reference.
exchange 2010 SP2 failed in SBS 2011 Standard Ed
http://social.technet.microsoft.com/Forums/en-US/018bacbd-cbec-4117-82e2-7247eba57099/exchange-2010-sp2-failed-in-sbs-2011-standard-ed
The Module DLL C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll failed to load
http://social.technet.microsoft.com/Forums/exchange/en-US/686d1a90-a016-4a4c-ae2e-6725914a5d5a/the-module-dll-cprogram-filesmicrosoftexchange-serverv14clientaccessowaauthexppwdll-failed
Additional article for your reference.
Exchange Server 2010 is in evaluation mode after installation or repair in SBS 2011 Standard
http://support.microsoft.com/kb/2527626
Hope it helps.
Best regards,
Amy