Default User

This article is part of Helge’s Profile Toolkit, a set of posts explaining the knowledge and tools required to tame Windows user profiles. Many errors related to user profiles result in the user getting a temporary profile instead of the regular local or roaming profile. I have written about possible causes for that here. In addition to that, there is an entirely different category of errors that occur when even a temporary profile cannot be created. This article describes likely causes.

This article is part of Helge’s Profile Toolkit, a set of posts explaining the knowledge and tools required to tame Windows user profiles. Administrators frequently have the requirement to adapt newly created user profiles to corporate standards. This is typically done by modifying the default profile, the profile Windows uses as a template when creating new user profiles during logon.

Some time ago I wrote about a misconception so common that it might pass as an IT legend - the confusion of HKU\.Default with the default user’s registry hive. Recently I came across another interesting misapprehension. As you know, the profiles base directory (usually C:\Documents and Settings) contains not only one special sub-folder, Default User, but also All Users, whose purpose is well-known: When Explorer builds the start menu and the desktop it pulls entries both from the logged-on user’s profile and from the all users folder. That is, by the way, the reason why standard users (i.e. non-admins) cannot modify some of the icons on the desktop and in the start menu - those that reside in the All Users folder, which is writeable only for administrators.

Most technical folks have stumbled across the registry hive HKEY_USERS\.Default at some point. Many of them think they know what it is used for. Interestingly, most who do are wrong.