Interdev connection failed: Method not allowed(Error code = 80070005)

I was recently re-writing a classic ASP web application into .Net. So I was trying to create a web project in Visual Studio InterDev when I got this error. My environment: XP SP2, IIS 6. Resolution: I did not have Microsoft FrontPage extensions installed. To check a.) go to Control Panel > Add Remove Programs > Add Remove Windows Component b.) Select Internet Information Services (IIS) c.) Click Details and ensure FrontPage 2000 Server Extensions option is checked. If not, check it and click OK. That did it for me and may help you too.