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Required FQDNs and endpoints for Azure Virtual Desktop

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In order to deploy Azure Virtual Desktop and for your users to connect, you must allow specific FQDNs and endpoints. Users also need to be able to connect to certain FQDNs and endpoints to access their Azure Virtual Desktop resources. This article lists the required FQDNs and endpoints you need to allow for your session hosts and users.

These FQDNs and endpoints could be blocked if you're using a firewall, such as Azure Firewall, or proxy service. For guidance on using a proxy service with Azure Virtual Desktop, see Proxy service guidelines for Azure Virtual Desktop.

You can check that your session host VMs can connect to these FQDNs and endpoints by following the steps to run the Azure Virtual Desktop Agent URL Tool in Check access to required FQDNs and endpoints for Azure Virtual Desktop. The Azure Virtual Desktop Agent URL Tool validates each FQDN and endpoint and show whether your session hosts can access them.

Important

  • Microsoft doesn't support Azure Virtual Desktop deployments where the FQDNs and endpoints listed in this article are blocked.

  • This article doesn't include FQDNs and endpoints for other services such as Microsoft Entra ID, Office 365, custom DNS providers or time services. Microsoft Entra FQDNs and endpoints can be found under ID 56, 59 and 125 in Office 365 URLs and IP address ranges.

Service tags and FQDN tags

Service tags represent groups of IP address prefixes from a given Azure service. Microsoft manages the address prefixes encompassed by the service tag and automatically updates the service tag as addresses change, minimizing the complexity of frequent updates to network security rules. Service tags can be used in rules for Network Security Groups (NSGs) and Azure Firewall to restrict outbound network access. Service tags can be also used in User Defined Routes (UDRs) to customize traffic routing behavior.

Azure Firewall also supports FQDN tags, which represent a group of fully qualified domain names (FQDNs) associated with well known Azure and other Microsoft services. Azure Virtual Desktop doesn't have a list of IP address ranges that you can unblock instead of FQDNs to allow network traffic. If you're using a Next Generation Firewall (NGFW), you need to use a dynamic list made for Azure IP addresses to make sure you can connect. For more information, see Use Azure Firewall to protect Azure Virtual Desktop deployments.

Azure Virtual Desktop has both a service tag and FQDN tag entry available. We recommend you use service tags and FQDN tags to simplify your Azure network configuration.

Session host virtual machines

The following table is the list of FQDNs and endpoints your session host VMs need to access for Azure Virtual Desktop. All entries are outbound; you don't need to open inbound ports for Azure Virtual Desktop. Select the relevant tab based on which cloud you're using.

Address Protocol Outbound port Purpose Service tag
login.microsoftonline.com TCP 443 Authentication to Microsoft Online Services AzureActiveDirectory
*.wvd.microsoft.com TCP 443 Service traffic WindowsVirtualDesktop
catalogartifact.azureedge.net TCP 443 Azure Marketplace AzureFrontDoor.Frontend
*.prod.warm.ingest.monitor.core.windows.net TCP 443 Agent traffic
Diagnostic output		 AzureMonitor
gcs.prod.monitoring.core.windows.net TCP 443 Agent traffic AzureMonitor
azkms.core.windows.net TCP 1688 Windows activation Internet
mrsglobalsteus2prod.blob.core.windows.net TCP 443 Agent and side-by-side (SXS) stack updates AzureStorage
wvdportalstorageblob.blob.core.windows.net TCP 443 Azure portal support AzureCloud
169.254.169.254 TCP 80 Azure Instance Metadata service endpoint N/A
168.63.129.16 TCP 80 Session host health monitoring N/A
oneocsp.microsoft.com TCP 80 Certificates AzureFrontDoor.FirstParty
www.microsoft.com TCP 80 Certificates N/A
aka.ms TCP 443 Microsoft URL shortener, used during session host deployment on Azure Local N/A

The following table lists optional FQDNs and endpoints that your session host virtual machines might also need to access for other services:

Address Protocol Outbound port Purpose Service tag
login.windows.net TCP 443 Sign in to Microsoft Online Services and Microsoft 365 AzureActiveDirectory
*.events.data.microsoft.com TCP 443 Telemetry Service N/A
www.msftconnecttest.com TCP 80 Detects if the session host is connected to the internet N/A
*.prod.do.dsp.mp.microsoft.com TCP 443 Windows Update N/A
*.sfx.ms TCP 443 Updates for OneDrive client software N/A
*.digicert.com TCP 80 Certificate revocation check N/A
*.azure-dns.com TCP 443 Azure DNS resolution N/A
*.azure-dns.net TCP 443 Azure DNS resolution N/A
*eh.servicebus.windows.net TCP 443 Diagnostic settings EventHub

Tip

You must use the wildcard character (*) for FQDNs involving service traffic.

For agent traffic, if you prefer not to use a wildcard, here's how to find specific FQDNs to allow:

  1. Ensure your session hosts are registered to a host pool.
  2. On a session host, open Event viewer, then go to Windows logs > Application > WVD-Agent and look for event ID 3701.
  3. Unblock the FQDNs that you find under event ID 3701. The FQDNs under event ID 3701 are region-specific. You need to repeat this process with the relevant FQDNs for each Azure region you want to deploy your session hosts in.

End user devices

Any device on which you use one of the Remote Desktop clients to connect to Azure Virtual Desktop must have access to the following FQDNs and endpoints. Allowing these FQDNs and endpoints is essential for a reliable client experience. Blocking access to these FQDNs and endpoints isn't supported and affects service functionality.

Select the relevant tab based on which cloud you're using.

Address Protocol Outbound port Purpose Client(s)
login.microsoftonline.com TCP 443 Authentication to Microsoft Online Services All
*.wvd.microsoft.com TCP 443 Service traffic All
*.servicebus.windows.net TCP 443 Troubleshooting data All
go.microsoft.com TCP 443 Microsoft FWLinks All
aka.ms TCP 443 Microsoft URL shortener All
learn.microsoft.com TCP 443 Documentation All
privacy.microsoft.com TCP 443 Privacy statement All
*.cdn.office.net TCP 443 Automatic updates Windows Desktop
graph.microsoft.com TCP 443 Service traffic All
windows.cloud.microsoft TCP 443 Connection center All
windows365.microsoft.com TCP 443 Service traffic All
ecs.office.com TCP 443 Connection center All

If you're on a closed network with restricted internet access, you might also need to allow the FQDNs listed here for certificate checks: Azure Certificate Authority details | Microsoft Learn.

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