New-RdsTenant -Name "Windows Virtual Desktop Betts" -AadTenantId "xxxxx" -AzureSubscriptionID "xxxxxx"
And are faced with the error "New-RdsTenant : User is not authorized to query the management service.". This is due to a permission configuration problem on Azure AD.
Before you get to the stage of creating a new WVD tenant you must complete the consent process to grand access to your AAD tenant, this can be done here https://rdweb.wvd.microsoft.com/
Once it is done you will notice two new objects under Enterprise Applications for Windows Virtual Desktop, click on the first one.
You must add a new user account with TenantCreator permissions before you can create a new WVD tenant. Please note that the Global Admin account for the directory does not work, it must be TenantCreator.
Once you have a TenentCreator, ensure you authenticate to your directory at the Add-RdsAccount stage using this account before you attempt to create a new WVD tenant. This is where you will be faced with "User is not authorized to query the management service." even if you use a Global Admin account.