Unexpected error 0x8ffe2740 occurred is basically an error message in Internet Information Services Manager (IIS Manager), and to be frank is not a helpful message. It just means that you can’t start your default website in IIS b’coz the port 80 is been used by other process.The usual suspect for the this error is Skype, b’coz Skype too uses alternative port 80 for its incoming calls beside Port 443 and other configured Port .When your PC start Skype take over port 80 before your IIS take it .To get rid of this error there are 2 solutions
· If you are in hurry to run your default website in IIS – Then just close your Skype and restart your default website, than restart your Skype. This is just a temporary solution you may have to do it Every time when you restart your pc, to get rid from it permanently try solution No-2.
· Open your Skype - Skype File-> Options ->Advanced -> Connection ->Uncheck (Use Port 80 and 443 as alternative for incoming connections) than save. Restart your IIS and default website.Go to start -> Run -> type cmd-> type iisreset than enter. It will restart your IIS
Thanks . hope this will help!!