OracleXETNSListener runs on port 8080

If you run locally a Oracle XE instance, you are bound to have it occupy port 8080 (with catastrophic consequences for all other application using this popular port)

Run tcpview to make sure that the process tnslsnr.exe is using the port 8080

You can then open Sqldeveloper, login as SYS, and run this:

begin
dbms_xdb.sethttpport('9090');
end;

then restart the oracle listener (maybe first shut it down, they start your other application using port 8080, then start the oracle listener)

it's a sad world. Why is everyone using 8080, there are so many integer numbers...