UPD, short for User Profile Disks, is a new disk type for Remote Desktop Services in Windows Server 2012 R2. It’s an alternative to roaming profiles and folder redirections for RDS to store user profiles as a separate VHDX disk on dedicated file storage. The disk is mounted to the user session as soon as the user logs into the RDS server and gets unmounted when the user logs off.

If you have a lot of users using RDS with UPD enabled, there will be a lot of individual UDP files stored on the file share, named with the unique GUID of the AD user, like below:

UPD List 2 600x315 - How To Tell Which User Profile Disk UPD Belongs to Which AD User

So, how to identify which UPD disk belongs to which user account?

  1. Login to Terminal Server as an Administrator
  2. Go to Registry Editor
  3. Under Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
  4. Click on the profile then identify the domain user name in ProfileImagePath

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