Error ID: AADDS109 Replica Set: West US/fuzevms-vnet/default

Question

Our app.fuzedigital.com Microsoft Entra Domain Service is saying that "A resource that is used for your managed domain has been deleted. This resource is needed for Azure AD Domain Services to function properly." I've troubleshooted it as much as I can and can't figure out why it's saying this. I'm not aware of any resource that was deleted recently. The domain is still operational as far as I can tell. The fuzedomainservices Resource Group has a Load balancer, 2 Public IP addresses, and 2 network interfaces. All are in the same Location (West US) as the Entra Domain Service. Our NSG's all allow all port traffic within the VPN. Health probes exists for ports TCP 389 (LDAP), TCP 636 (LDAPS), TCP 53 (DNS) and 3268 (Global Catalog). I don't see any deleted resources in the activity logs.

Why are we getting this error and how can I fix it?

Thanks!

Answer 1

Hello ckunkel,

Welcome to Microsoft Q&A,

Regarding the critical error message: "Resources for your managed domain cannot be found" in Azure AD Domain Services. This alert is typically triggered when one of the required resources (such as public IP addresses, virtual network interfaces, or a load balancer) is deleted or the alert is likely due to the upgrade of Microsoft Entra Domain Services VMs from Windows Server 2019/2022 to 2025. The following steps outline how to check the health status and timestamp for resource deletion:

1. In the Microsoft Entra admin center, search for and select Domain Services. Choose your managed domain, such as aaddscontoso.com.
2. In the left-hand navigation, select Health.
3. In the health page, select the alert with the ID AADDS109.
4. The alert has a timestamp for when it was first found. If that timestamp is less than 4 hours ago, the Azure platform may be able to automatically recreate the resource and resolve the alert by itself. For different reasons, the alert can be older than 4 hours. In that case, you can delete the managed domain and then create a replacement managed domain for an immediate fix.

https://learn.microsoft.com/en-us/entra/identity/domain-services/troubleshoot-alerts#aadds109-resources-for-your-managed-domain-cannot-be-found

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