Изначально Oracle Data Notification работает в операционной системе Windows 7, но в последних версиях ОС, таких как win10 и win2012 server OS, происходит сбой w3wp. Но проблема была исправлена установкой последней версии Oracle Client, то есть 2.122.1.0.
This is just a guess, but since port 80 is the conventional port for HTTP, you may have a webserver running on your system. Is IIS active?
If you are running IIS you may have the web farm service running. That was what was killing my xampp.
Try
netstat -anb -p tcp
that show ports and processes
Use TcpView to find the process that listens to the port and close the process.
netstat -a -b
Should tell you what program is bound to port 80
netstat -ano
That will show you the PID of the process that is listening on port 80.
After that, open the Task Manager -> Processes tab. From the View -> Select Columns
menu, enable the PID
column, and you will see the name of the process listening on port 80.