If you have mistakenly written a password other than
admin. It will give a error like this
HTTP ERROR 503 Problem accessing /. Reason: Service Unavailable
Now, you will need to change the password
Changing the password
Adding these two PATH Variables in your Environment Variables.
C:\Program Files\PostgreSQL\14\bin C:\Program Files\PostgreSQL\14\lib
14 is my PostgreSQL version. It can be different for you. So, replace it with your current PostgreSQL version.
Now, open CMD and enter
psql -U postgres
Enter the password you previously entered.
After that, Enter this
admin as password.
You have successfully updated your password