Unable to 'su root' in kali on WSL

Hello mates,
I have installed kali on Windows with WSL, and I have created a default user in it.
However, this user has only limited privileges, so I decided to use root instead.
As far as I can remember, the default password for root is toor.
Then I typed 'su root',and saw the dear 'Password:'
'toor' my fingers moved before I can think.


'Enter'


su: Authentication Failure.



Double checked https://docs.kali.org/introduction/k...ault-passwords to confirm it.


Could anyone help me to recover the default password for my poor root? Thanks!

I'm sure the root password is randomly generated in WSL.
It's irrelevant though, just type

Code:

---

sudo su

---

to become root

Thank you @re4son. Your answer helped me as well.