" was run: "System.ArgumentOutOfRangeException: StartIndex cannot be less than zero.

Question

I get an error given below while running Active Directory Preparation with the command

Setup.exe /PrepareAD /IAcceptExchangeServerLicenseTerms_DiagnosticDataON

I have no supportive document available with Microsoft for this error.

The same error occurs when I try to upgrade Exchange server 2016 Cu 20 to CU 22.

Error:
The following error was generated when "$error.Clear();
$createTenantRoot = ($RoleIsDatacenter -or $RoleIsPartnerHosted);
$createMsoSyncRoot = $RoleIsDatacenter;

      #$RoleDatacenterIsManagementForest is set only in Datacenter deployment; interpret its absense as $false
      [bool]$isManagementForest = ($RoleDatacenterIsManagementForest -eq $true);

      if ($RolePrepareAllDomains)
      {
          initialize-DomainPermissions -AllDomains:$true -CreateTenantRoot:$createTenantRoot -CreateMsoSyncRoot:$createMsoSyncRoot -IsManagementForest:$isManagementForest;
      }
      elseif ($RoleDomain -ne $null)
      {
          initialize-DomainPermissions -Domain $RoleDomain -CreateTenantRoot:$createTenantRoot -CreateMsoSyncRoot:$createMsoSyncRoot -IsManagementForest:$isManagementForest;
      }
      else
      {
          initialize-DomainPermissions -CreateTenantRoot:$createTenantRoot -CreateMsoSyncRoot:$createMsoSyncRoot -IsManagementForest:$isManagementForest;
      }
    " was run: "System.ArgumentOutOfRangeException: StartIndex cannot be less than zero.

Parameter name: startIndex
at System.String.Remove(Int32 startIndex, Int32 count)
at Microsoft.Exchange.Management.Tasks.DirectoryCommon.IsRODCType(String DnsHostName)
at Microsoft.Exchange.Management.Tasks.InitializeDomainPermissions.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)
at Microsoft.Exchange.Configuration.Tasks.Task.ProcessTaskStage(TaskStage taskStage, Action initFunc, Action mainFunc, Action completeFunc)
at Microsoft.Exchange.Configuration.Tasks.Task.ProcessRecord()
at System.Management.Automation.CommandProcessor.ProcessRecord()".

Answer 1

Hi @Kannan Balakrishnan ,

The issue may occur with the container in AD is missing.

Did you install the IIS RUL Rewrite module and Universal C Runtime in Windows (KB 2999226)?

Cumulative Update 22 for Exchange Server 2016 (KB5005333) (microsoft.com)

And you need to run below command before you install the CU22.

E：\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareSchema  
E：\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAD /OrganizationName："MYDomain"  
E：\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains  

Exchange Server prerequisites, Exchange 2019 system requirements, Exchange 2019 requirements | Microsoft Learn

I find a similar case for you referenfce.

Unable to Install CU21 for Exchange 2016 - Microsoft Q&A

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