XAMPP Apache Could Not Bind to Port 80

Recently, I had an issue starting up Apache. My Apache instance runs on a Windows 7 development box and also shares the box with IIS 7. Immediately I thought that it was IIS and of course that's a valid assumptions but binding IIS to port 81 did not solve the issue.

I received the following error while trying to start Apache:

D:\xampp>apache_start.bat
Diese Eingabeforderung nicht waehrend des Running beenden
Bitte erst bei einem gewollten Shutdown schliessen
Please close this command only for Shutdown
Apache 2 is starting ...
(OS 10013)An attempt was made to access a socket in a way forbidden by its access permissions.  : make_sock: could not bind to address [::]:80
(OS 10013)An attempt was made to access a socket in a way forbidden by its access permissions.  : make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs

Apache konnte nicht gestartet werden
Apache could not be started
Press any key to continue . . .
D:\xampp>

Running a netstat I could see that something called SYSTEM was listening on port 80.

D:\canvas\xampp>netstat -aon | findstr :80
  TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       4

It turns out that another service called SQL Server Reporting Services (SQLEXPRESS) was causing the conflict. Stopping the service through Component Services > Services allows you to start Apache on port 80.

*EDIT
On another machine at work a service called "Web Deployment Agent Service", part of Microsoft's WebMatrix, was also preventing Apache from binding to port 80.