Created a clean installation via latest MCT today and discovered a
defaultuser0 in the list of folders under
Does anybody know if it's safe to delete it?
Adding to @DavidPostill's answer:
Since, as noted in the comments, defaultuser0 does not show up in any graphical interfaces accessible through either the settings app or the control panel, here is how to get rid of it cleanly:
Run the Windows command prompt as Administrator
Option A: Rightclick on the cmd shortcut in the start menu and select "run as administrator"
Option B: Hold CRTL+SHIFT and click on any cmd shortcut or the executable itself
Option C: Open the task manager, selet file -> new task, enter "cmd" and select the run as administrator checkmark
net user defaultuser0 /DELETE
After upgrading to the Anniversary Update, many users have noticed that apart from their regular user accounts, the OS also creates a new Defaultuser0 account. The most interesting part is that this unusual profile cannot be deleted even after performing a clean install.
The Defaultuser0 account bug has been haunting Windows users for a long time. Nobody knows exactly why this account is being created or how users can prevent its creation. The commonly accepted hypothesis suggests the Defaultuser0 profile is created when something goes wrong during the profile creation phase of the main account, and it should be harmless.
Yes. Use one of the following methods.
How to get rid of the Defaultuser0 profile
Solution 1 – simply delete the Defaultusers0 account
Go to Control Panel > User accounts > Delete the profile
Solution 2 – Enable the hidden admin account
- Start your computer using your Windows 10 DVD or USB
- Select the correct time and keyboard type
- Click on Repair your computer
- Select Choose an option > Troubleshoot
- Click on Command Prompt > type the command
net user administrator /active:yes
- Restart your computer > delete the Defaultuser0 account.
Seems like this potentially was hooked by NT Authority\System or NT Service\TrustedInstaller:
psexec -s -i cmd.exe followed by
lusrmgr.msc followed by
Of course this means loading the PsTools beforehand and placing them into
I had this issue with 2 folders showing in my C:/users/ directory. They were defaultuser0 and defaultuser100000. I removed both of them and have not had an issue. The user accounts did not show up in my system so I assumed they were just leftovers from some installation process that weren't cleaned up.
You shouldn't worry,
defaultuser0 is a normal account created during Windows installation. When your computer goes to setup, you will be automatically logged in to defaultuser0, and will be greeted with the setup screen. After you set up your computer, the account and the user directory will automatically be deleted. Sometimes, the directory or the account doesn't get deleted, so here is how you can manually delete the account yourself.
Open command prompt as an admin and type:
defaultuser0 shows up in the user list, then type:
net user /delete defaultuser0
Next, open file explorer and go to
C:\Users, then if the
defaultuser0 directory is present, delete it.
Lastly, open the registry by pressing Win + R and typing:
Then, go to
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\ProfileList and go into each key and check the
ProfileImagePath entry of each key to see if one of them says
C:\Users\defaultuser0. If you find the
defaultuser0 remnant, delete the key.
You also don't have to delete it, it's safe for it to stay on your computer.
Hope that helped!