An Azure service that is used to provision Windows and Linux virtual machines.
The behavior described (VM was still reachable by RDP for a while but no longer appears in the tenant/portal and now is unreachable) indicates that the VM resource is no longer present or addressable in the current subscription/tenant, so Azure-side RDP troubleshooting steps cannot be applied until the VM object is located and confirmed to exist.
From the provided context, only RDP/connectivity troubleshooting is covered, and all of it assumes that the VM is visible and manageable in the Azure portal or via Azure PowerShell/CLI. The documented steps include:
- Verify the VM exists and is running in the Azure portal and check its health/boot state.
- If the VM is present, use the standard RDP troubleshooting flow:
- Use the built-in troubleshooting steps: reset RDP configuration and credentials using
Set-AzVMAccessExtension. - Verify Network Security Group (NSG) rules allow inbound TCP 3389 and that no higher-priority deny rules block it.
- Ensure the VM has a reachable public IP or private connectivity (VPN/ExpressRoute) and that the Connect button is not grayed out.
- Check VM Resource Health and Boot Diagnostics.
- Use Serial Console to fix OS-level issues (firewall, NIC disabled, RDP service, registry
fDenyTSConnections, etc.). - As needed, reset NIC, restart, or redeploy the VM.
- Use the built-in troubleshooting steps: reset RDP configuration and credentials using
However, none of the referenced documentation covers the case where the VM no longer appears at all in the tenant/subscription (for example, if it was deleted, moved to another subscription/tenant, or the current identity no longer has access). In that situation, the documented RDP and NIC/NSG repair procedures cannot be executed because they all require an existing VM resource.
Because of this, the context does not provide supported steps to recover or troubleshoot a VM that is no longer visible in the tenant.
References:
- Troubleshoot Remote Desktop connections to an Azure virtual machine
- Troubleshoot using Azure PowerShell
- Detailed troubleshooting steps for remote desktop connection issues to Windows VMs in Azure
- Source 4: Windows-based Azure VM
- Troubleshoot errors when failing over VMware VM or physical machine to Azure
- Cannot remote desktop to a VM because the network interface is disabled
- Remote Desktop license server isn't available when you connect to an Azure VM
- Troubleshoot RDP blocked by NSG rules on Azure Windows VMs
- Unable to Access or Connect to VM - Microsoft Q&A