IIS - HRESULT 0x80070020 - The process cannot access the file because it is being used by another process.

IIS - HRESULT 0x80070020 - The process cannot access the file because it is being used by another process.

I was facing this issue since last few days and never realized that this is due to Skype program that I have recently installed. So looks like Skype try to use Port 80 on your machine and interfere with IIS server. Following are additional details on this issue:

IIS Manager Error: The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020) - http://forums.iis.net/t/1086489.aspx

IIS: The process cannot access the file because it is being used by another process.