Cannot Login to XAMPP Local

Hi – I have taken over for another employee who was the WordPress web support person.

I found XAMPP installed on my local computer. I’ve gone through a few tutorials online and it does seem to work. There is one issue. When I type:

https://localhost/wordpress/

…a WP site with an installed theme displays. It looks like this was the last theme my predecessor was working on before he left. So then I typed:

https://localhost/wordpress/wp-login.php

…and tried my 3 different WP logins and passwords. I didn’t think any of them would work but tried it anyway. None worked.

So what I need to find out now is how can I create a login and password for this local host so I can then go in and start working on WP offline?

Any help is greatly appreciated. Thanks.