Hi,
Try to follow what ever Sharu has suggested..!
If that is not solving your problem then try to follow the below steps to make port 80 free for WFA,
1)Execute the following command to list which PID is consuming the port:80
# netstat -aon|findstr 80
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 1400 <<<<<<----------------------
TCP 0.0.0.0:5800 0.0.0.0:0 LISTENING 1692
TCP 0.0.0.0:8009 0.0.0.0:0 LISTENING 1400
TCP 0.0.0.0:8081 0.0.0.0:0 LISTENING 1252
TCP 0.0.0.0:8083 0.0.0.0:0 LISTENING 1400
UDP 0.0.0.0:8081 *:* 1252
UDP 0.0.0.0:8082 *:* 1252
UDP 127.0.0.1:1380 *:* 5324
Here Port:80 is consumed by PID:1400
2) Then try to list the process with PID :1400
#tasklist|findstr 1400
NA_WFA_SRV.exe 1400 Console 0 700,116 K
In my case, its WFA server.
In your case, it would be different service/process. So, go to services page and stop the service and make it disabled by setting the startup-type in the properties.
Now, your WFA installation would be smooth..!
Hope it helps..!
Warm Regards
Sivaprasad K