The latest kali version is kali2020
After installation, many users still use the previous default root account directly
Account: root Password: toor
But the latest kali2020 has changed the security policy, the default account name and password are as follows:
Account name: kali
Password: kali
If you want to switch to root account mode, it is recommended to use the following command operation
sudo su
Then enter the default password kali to switch to the root account.
reference:
Official notice: https://www.kali.org/news/kali-default-non-root-user/
https://www.securityorb.com/featured/kali-2020-1-default-username-password-kali-kali/