Error when you run the Azure Active Directory Sync Tool Configuration Wizard: Unknown error (0x80005000)

This article provides a resolution to resolve an issue where you receive an error message when you run the Azure Active Directory Sync Tool Configuration Wizard.

Original product version:   Office 365 Identity Management, Azure Active Directory, Cloud Services (Web roles/Worker roles), Microsoft Intune, Azure Backup
Original KB number:   3003331

Symptoms

When you run the Azure Active Directory Sync Tool Configuration Wizard, the tool fails, and you receive the following error message:

Error
Unknown error (0x80005000)

Cause

This problem occurs if the Azure Active Directory Sync Tool Configuration Wizard cannot configure the domain.

Resolution

To resolve this problem, make sure that all domain controllers are running in a healthy state. To determine which domain or domain controller is causing the problem, follow these steps:

  1. On the server on which the Azure Active Directory Sync Tool is installed, start Windows PowerShell.

  2. Run the following commands:

    $Forest = [System.DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest().domains
    
    $Forest
    
  3. Examine the information in the output.

    In the following example, the dev.contoso.com domain is unreachable. You can determine this because information about the domain is missing in the output, as in the following example.

    Forest : contoso.com
    DomainControllers : {ContosoDC01.contoso.com}
    Children : {dev.contoso.com}
    DomainMode : Windows2008R2Domain
    Parent :
    PdcRoleOwner : ContosoDC01.contoso.com
    RidRoleOwner : ContosoDC01.contoso.com
    InfrastructureRoleOwner : ContosoDC01.contoso.com
    Name : contoso.com
    
    Forest :
    DomainControllers :
    Children :
    DomainMode :
    Parent :
    PdcRoleOwner :
    RidRoleOwner :
    InfrastructureRoleOwner :
    Name : dev.contoso.com
    
  4. Investigate and resolve the problem. Most likely, the domain controller that's hosting the domain is not running or is not in the network.

More information

Still need help? Go to Microsoft Community or the Azure Active Directory Forums website.