if you are un-able to start Websites in the IIS and receiving fallowing errors “The format of the specified network name is invalid” couple quick things you can look into remedy to problem.
First on the server drilldown to this Reg key.
Make sure, the IP Address listed there is the IP correct IP address configured on the NIC card of the service ( correct interface) if not make the proper changes.
After this you need to open CMD type
Net stop http /y
net start w3svc
now you should be able to start the websites under IIS…