WAMPSERVER on windows 8 not starting

Question

I have just installed WAMPSERVER (Apache/2.4.9 (Win64) ) on my WIN 8 machine and when tried to start it, its icon is always RED / orange ( not green ). From services when tried to run the service I see following error message:

From the even log, I see following multiple errors

The wampapache64 service terminated with the following service-specific error: 
Incorrect function.

The Apache service named  reported the following error:
>>> (OS 10013)An attempt was made to access a socket in a way forbidden by its access        permissions.  : AH00072: make_sock: could not bind to address 0.0.0.0:80 

The Apache service named  reported the following error:
>>> (OS 10013)An attempt was made to access a socket in a way forbidden by its access   permissions.  : AH00072: make_sock: could not bind to address [::]:80    

The Apache service named  reported the following error:
>>> AH00015: Unable to open logs    

The Apache service named  reported the following error:
>>> AH00451: no listening sockets available, shutting down  

The wampapache64 service terminated with the following service-specific error: 
Incorrect function.  

The Apache service named  reported the following error:
>>> (OS 10013)An attempt was made to access a socket in a way forbidden by its access  permissions.  : AH00072: make_sock: could not bind to address [::]:80.

Answer 1

Okay, I figured out: my machine's port 80 was being used by IIS, not by Skype. Here is how I found that:

Left-click the WAMPManager icon to reveal the menu. Click Apache ► Service ► Test port 80. This will launch a command window and display some information about what, if anything is using port 80. You can find more details at http://forum.wampserver.com/read.php?2,122527.

Configure Apache to listen on different port
Since I wanted to keep running IIS on the port 80, I decided to run my WAMP Server on a different port. So here is how I did it.

I had to change http.conf file which in my case is in folder C:/WAMP/bin/apache/apache2.4.9/conf/. Open it (with Notepad for example) and search for 80. I had to change the following three lines on different places:

Listen 0.0.0.0:80         # Changed to Listen 0.0.0.0:81
Listen [::0]:80           # Changed to Listen [::0]:81
ServerName localhost:80   # Changed toServerName localhost:81

Now I have got the green icon of WAMP Server on Windows 8.

More details on http://forum.wampserver.com/read.php?2,13744.

Answer 2

If you have Skype running, then you have to do the following within Skype: in the menu bar, click Tools ► Options ► Advanced settings ► Connection. Now uncheck the following checkbox:

Use port 80 and 443 as alternatives for incoming connections