IIS has been throwing some incomprehensible error codes at me recently: “Unexpected error 0x8ffe2740 occurred”. A quick search discovered that this happens when another service is running on port 80… something that really should not be “unexpected” and should have resulted in a more helpful error message.
Apparently someone at Skype decided that their client software should lock up port 80 if it’s not being used at start-up. This means anyone who starts IIS after they start Skype will get an error message.
Poor show from both Skype and Microsoft.