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Salamat_Shah's avatar
Salamat_Shah
MCT
Jul 14, 2025

Azure VM Windows Server 2022 Domain Joining Issue

We have multiple Windows Server 2022 VMs in a dedicated Resource Group, created as per best practices for each engagement. All firewall roles, VNet, routing, and NSGs are configured, with Azure Firew...
ElenaMia's avatar
ElenaMia
Tin Contributor
Jun 26, 2026

Hi Salamat_Shah​ 

Since basic connectivity tests (ping, nslookup, and telnet) are working, the issue may be related to authentication or Active Directory communication rather than general network connectivity.

Ensure the VM is using the Active Directory DNS servers instead of Azure's default DNS. Also verify that RPC, LDAP, Kerberos, and SMB ports are allowed through Azure Firewall and any on-premises firewalls. Confirm that the VM's system time is synchronized with the domain controllers, as Kerberos authentication can fail if there is a time difference. Finally, review the System and NetSetup event logs on the VM for more detailed error messages.

This error is commonly caused by blocked RPC traffic or DNS misconfiguration, even when basic connectivity tests are successful. Does the issue occur when trying to join any domain controller, or only a specific one?