How do I hide/remove user icon in login screen?

Hello lambentmarkus, and welcome to Seven Forums.

If you like, you could disable the user account to no longer have it show up on the log on screen.

User Account - Enable or Disable

If you don't want to disable the user account, then you could set Windows to require users to enter both their user name and password on the log on screen to no longer see any users on the log on screen.

Log On with User Name and Password

Hope this helps, :)
Shawn

lambentmarkus said:

I don't want to disable and if I do it the other way there will still be an empty user icon.

If not, is there a way to make the user login icon empty (without adapting it manually to its background)?

What I posted will make the user icon empty, and only have one on the log on screen.

lambentmarkus said:

Is there not a way to completely remove the login user icon?

There's this below, but it is risky to do. One mistake could cause issues.

windows 7 - How to remove the User picture from Login and Lock screen? - Super User

Delete the user account :)

Why do you have it if you don`t want it on the welcome/logon screen ?