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Editorial Team
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Asked: 2026-05-26T21:05:26+00:00

I’ve upgraded to iis express 7.5 with VS2010 SP1. Within the release notes it

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I’ve upgraded to iis express 7.5 with VS2010 SP1. Within the release notes it specified that express is able to run WITHOUT administrator permissions. When I try to run from the commandline (powershell cmd line) I receive the same “Access Denied” error (shown below) I was getting running with IIS Express 7.

As far as I can tell admin rights is still required.

Anyone been able to run without admin rights?

The detailed error message is:

Failed to call HttpAddUrl with http://MACHINE-NAME:80/
Failed to register URL "http://MACHINE-NAME:80/" for site "WebSiteName" application "/". Error description: Access is denied. (0x80070005)
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1 Answer

  1. Editorial Team

    See here for what requires admin access and what doesn’t, depending on what you are doing with IIS Express: http://learn.iis.net/page.aspx/1003/running-iis-express-without-administrative-privileges/

    Administrative privileges are required in order to perform the following tasks:

    * Use a reserved port such as 80 or 443.
* Serve requests for external traffic.
* Configure a custom SSL certificate.
* Run SSL using a port outside the range of 44300 to 44399.

    So if you are doing any of the above, admin access will be required.

    This is irrespective of 7 or 7.5.

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