Question: I have a question related to PHP. I am .net developer. I usually work on asp.net and c#.I installed Visual Studio and SQL Server in my laptop.Now I am trying to Install Xampp server on my system. Here I getting some problem.After Installation When it check for port. It show me message port 80 or 443 aleardy in use apache server installation is failed. I Guess it is happening due to IIS installed in my system. I stopped the IIS and Installed it again But the same problem is coming again. I uninstall the Skype too for this but nothing is working for me. Please tell me why this is happening and what is the solution for this. I hope you understand what is my problem. Please help me for this

Answer: 
Another solution without changing skype: ( for port 443 ) 

First, port 443 is the HTTPS default port. you need to change that on the server to something else ( ex 4433 ). But in this case , you must specify that new port every time you want to use HTTPS requests ex : 

```
"https://localhost:4433"   .just typing "https://localhost" will NOT work. 

```

So to change the port , go to folder "htdocs" in the Apache server , and use something like "notepad++" to replace all :443 by :4433. These ports should be in "httpd-sni.conf" and 'httpd-ssl.conf"

I think it is ok to make the change as you are in a development environment.
just go to apache directory and search to find 'httpd-ssl.conf' and open it then search to find 443, you find 3, edit all of them to another number, i edit to 886. then save file and try to run apache.