Unexpected Error 0x8ffe2740 in IIS 5.1

If you are using IIS 5.1 on XP and if you get an error when you try to start the default website saying that "Unexpected Error 0x8ffe2740 Occurred", which means you have a port conflict with some other software in your system. Most of the time this can be some other server software such as Apache. But in my case it was "Skype". skype is using port 80 and 443 as alternatives for incoming connections.

so if you want to use both IIS and Skype at the same time change the port settings of the skype or change the port settings of the iis. but the port 80 is the default port for any webserver such as IIS , Apache. there for its better to change the port settings of the Skype.