You can remove your unknown users with this cmd project.
It is easy to use.
Just open your command-line (cmd: Win+R cmd + enter) on your TFS Server.
TFSUserManager.exe http://type-your-tfs-server-url
or
TFSUserManager.exe http://type-your-tfs-server-url:8080/tfs
And follow the instructions.
This project answers following questions.
- How to remove my account on all collections and projects.
- List of your collection users
- Remove specific user on all projects.
Feel free to contribute or open issue if you are dealing any problem on this project.