Upgrade Exchange server 2013 to CU7 error

Question

Dear Microsoft Team
I have Exchange server 2013 SP1 and upgrade it to CU5 it is working normal
But wen I try to Upgrade it to CU7 I got this error massage
Error:
The following error was generated when "$error.Clear();
          $maxWait = New-TimeSpan -Minutes 8
          $timeout = Get-Date;
          $timeout = $timeout.Add($maxWait);
          $currTime = Get-Date;
          $successfullySetConfigDC = $false;
          while($currTime -le $timeout)
            $setSharedCDCErrors = @();
            try
              Set-SharedConfigDC -DomainController $RoleDomainController -ErrorVariable setSharedCDCErrors -ErrorAction SilentlyContinue;
              $successfullySetConfigDC = ($setSharedCDCErrors.Count -eq 0);
              if($successfullySetConfigDC)
                break;
              Write-ExchangeSetupLog -Info ("An error ocurred while setting shared config DC. Error: " + $setSharedCDCErrors[0]);
            catch
              Write-ExchangeSetupLog -Info ("An exception ocurred while setting shared config DC. Exception: " + $_.Exception.Message);
            Write-ExchangeSetupLog -Info ("Waiting 30 seconds before attempting again.");
            Start-Sleep -Seconds 30;
            $currTime = Get-Date;
          if( -not $successfullySetConfigDC)
            Write-ExchangeSetupLog -Error "Unable to set shared config DC.";
        " was run: "System.Exception: Unable to set shared config DC.
   at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
   at Microsoft.Exchange.Management.Deployment.WriteExchangeSetupLog.InternalProcessRecord()
   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".
Best Regards
Rawa Zangana

Answer 1

Hi Rawa Zangana,
According to the error message, it seems that the Global Catalog not reachable from DC.
Please perform following steps.
1. Port 3268 listened on DC.
2. Enable Global Catalog role on all DCs.
3. Restart Exchange Server 2013 CU5.
4. Check whether Event 2080 found on all DCs, Event 2080 means that AD connectivity works fine.
5. Repeat CU7 installation.
Thanks
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