IIS process cannot access file in use

Question

We created an SSL certificate for our server and when we want to start IIS we get this error:

The process cannot access the file because it is being used by another process.

Port 443 seems to be in use. How can I solve this? Or How can I learn why port 443 in being used?

Answer 1

Marc B's comment is deserving of an actual answer, so I will paste it here:

Use netstat -b -a in an elevated privilege shell. It'll show all active ports and the processes attached to them. You can add -o if the process holding on to your port is svc.exe or another multi-instance executable (thanks to Mike K for the comment).

I've seen this happen on my development box where Skype actually takes over port 80 and/or 443. To turn off and disable Skype usage of and listening on port 80 and port 443,

1. Open the Skype window
2. Click "Tools"
3. Click "Options"
4. Click "Advanced"
5. Click "Connection"
6. Uncheck the checkbox for "Use port 80 and 443 as an alternatives for incoming connections" option.
7. Click the save button
8. Restart Skype

Answer 2

I just closed the skype, resolved the issue.