Blank page on RDWeb for users

When you have finished deploying Azure WVD machines and added those machines in the correct hosts you might fall into this error by a chance and not easily be able to understand or see it.

During the creation of Host Pools and AppGroups you might want to create your own fancy Host pool names and app group names, This is something normal but not when you want to use Azure WVD.

What Happens?

When you create an app group name other than the ones already existing (Desktop Application Group) you have to make sure that you would type this group name into the ARM Template since while deploying the VMs and typing the template would choose the default Application Group Name.

Error 1

The connection to the remote PC was lost. This might be because of a network connection problem. If this keeps happening, ask your admin or tech support for help.

Error 2

User is assigned to the wrong Application Group

add-RdsAppGroupUser : The specified UserPrincipalName is already assigned to a RemoteApp AppGroup in the specified HostPool.

ActivityId: feb39a7b-b74f-49d3-a100-1fc22ec66454

Powershell commands to diagnose the failure:

Get-RdsDiagnosticActivities -ActivityId feb39a7b-b74f-49d3-a100-1fc22ec66454

At line:4 char:1

+ add-RdsAppGroupUser -TenantName cagriandMoh10ly -HostPoolName WVD-Hos …

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+ CategoryInfo : FromStdErr: (Microsoft.RDInf…RdsAppGroupUser:AddRdsAppGroupUser) [Add-RdsAppGroupUser], RdsPowerShellException

+ FullyQualifiedErrorId : UpnAlreadyHasRemoteAppAssignment,Microsoft.RDInfra.RDPowershell.AppGroupUser.AddRdsAppGroupUser

Solution:

Remove the user from the other application group and add him to the one where you have your RdsSessionHost that you would like your users to access.

Connect to Azure-AD first and run the following command, Make sure you specify the AppGroupName that you want to remove your users from and the AD Group that’s relevant to those users.

foreach($UPN in (Get-AzureADGroupMember -ObjectId ((Get-AzureADGroup | Where-Object DisplayName -Like “WVDUsers”).ObjectId)).UserPrincipalName)

{

Write-Output $UPN

Remove-RdsAppGroupUser -TenantName cagriandMoh10ly -HostPoolName WVD-Host-Pool01 -AppGroupName “Desktop App Group” -UserPrincipalName $UPN

}

Add the Users again and see what happens

foreach($UPN in (Get-AzureADGroupMember -ObjectId ((Get-AzureADGroup | Where-Object DisplayName -Like “WVDUsers”).ObjectId)).UserPrincipalName)

{

Write-Output $UPN

Add-RdsAppGroupUser -TenantName cagriandMoh10ly -HostPoolName WVD-Host-Pool01 -AppGroupName “Desktop Application Group” -UserPrincipalName $UPN

}

Refresh the RDWEB Page and see if you can access your host

The same desktop came back since we are using FSLogix profile container