<t>I had the exact same problem.<br/>
<br/>
The reason - bad IIS config file.<br/>
<br/>
Try deleting the automatically-created IISExpress folder, which is usually located at %userprofile%/Documents, e.g. C:\Users\[you]\Documents\IISExpress.<br/>
<br/>
Don't worry, VS should create it again - correctly, this time - once you run your solution again.<br/>
<br/>
EDIT: Command line for deleting the folder:<br/>
<br/>
rmdir /s /q "%userprofile%\Documents\IISExpress"<br/>
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```</t>