Cannot setup password for my XAMPP server

[dflomo3]

Access forbidden!
You don't have permission to access the requested directory. There is either no index document or the directory is read-protected.

If you think this is a server error, please contact the webmaster.

Error 403
localhost
Apache/2.4.34 (Win32) OpenSSL/1.0.2o PHP/5.6.37

Someone please help me, since I install XAMPP,
I cannot setup password for my Apache and SQL server
2:47:59 PM [Apache] XAMPP Apache is already running on port 80
2:47:59 PM [Apache] XAMPP Apache is already running on port 443

[Nobbie]

There is no password for Xampp?!???

What are you doing exactly? Please describe precisely.