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Azure VM Windows Server 2022 Domain Joining Issue
Have you checked that Azure Firewall have policies for all the needed ports? https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/config-firewall-for-ad-domains-and-trusts
You can use Test-NetConnection -ComputerName "NameOfDC" -Port 88
And then test the required ports.
Also worth checking out the firewall logs in Azure Firewall to see if some traffic is being intercepted.
AzureDiagnostics
| where Category == "AZFWApplicationRule"
| sort by TimeGenerated
| project TimeGenerated, Fqdn_s, TargetUrl_s, Action_s, ActionReason_s, DestinationPort_d, RuleCollection_s
AzureDiagnostics
| where Category == "AZFWNetworkRule"
| sort by TimeGenerated
| project TimeGenerated, Protocol, SourceIP, DestinationIP, DestinationPort, Action_s, RuleCollection_s