When publishing our Lync Topology I’m getting the following error on the Enabling Topology step:

Error: Found multiple objects with identity “lyncFE01.lynclab.local,McxInternal” in Active Directory.
 Details
 Type: ActiveDirectoryException
  Stack Trace
at Microsoft.Rtc.Management.Deployment.Core.CompatTrustedService.GetTrustedService(ADSession session, ADObjectId containerId, String fqdn, String serviceType)
at Microsoft.Rtc.Management.Deployment.Core.CompatTrustedService.Create()
at Microsoft.Rtc.Management.Deployment.Roles.WebServices.GlobalActivate(IService service, Computer computer)
at Microsoft.Rtc.Management.Deployment.Core.Service.GlobalActivate(Computer computer)
at Microsoft.Rtc.Management.Internal.Utilities.LogWriter.InvokeAndLog[T](Action`1 action, T arg)
8/6/2013 2:41:59PM Error
Error: An error occurred: “Microsoft.Rtc.Management.Deployment.ActiveDirectoryException” “Found multiple objects with identity “lyncFE01.lynclab.local.McxInternal” in Active Directory.”



Solution
1) Run Test-CsTopology -Report C:temptesttopology.html
2) Prepare the appropriate AD for a TXT file:Ldifde -f c:tempaddif.txt -s DC_FQDN -d “CN=RTC Service, CN=Services, CN=Configuration, DC=lynclab, DC=local”
3) Find the duplicate entries in txt file. Then delete them from AD using ADSIE Edit
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