無法綁定IIS，需要超級管理員綁定URL

Unable to launch the IIS Express Web server.  Failed to register URL "http://localhost:62940/" for site "SITE NAME" application "/". Error description: Access is denied. (0x80070005). 

Some web projects are causing me problems while others work fine. I decided to focus on one of the problematic ones. I'm using Visual Studio 2013 on Windows 7. I think I'm running it as administrator, the window title says PROJECT NAME - Microsoft Visual Studio (Administrator).

When I try to run the project I get a popup saying:

Unable to launch the IIS Express Web server.  Failed to register URL "http://localhost:62940/" for site "SITE NAME" application "/". Error description: Access is denied. (0x80070005). 

This does not seem entirely uncommon but I have tried many of the suggestions without luck:

1. Deleted %userprofile%\Documents\IISExpress\, tried to run.

2. netsh http add urlacl url=http://localhost:62940/ user=everyone, rebooted and tried to run. (Actually user=Alla since Swedish Windows).

3. netsh http delete urlacl url=http://localhost:62940/, rebooted and changed from .

4. Reinstalled IIS 8.0 Express

5. Reinstalled Visual Studio 2013

I'm at my wit's end, what am I doing wrong?

Edit 1: If I change the port of the project (e.g. to 55555) it starts... This is not a desirable solution since these projects are worked on by several people. Maybe the port is blocked by something else? If so, is there an easy way to check by what?

Edit 2: Port 62940 seems to be free. Running netstat does not show any application listening to it. Something else must be wrong.