IIS 7.5 (Windows 7) – HTTP Error 401.3 – Unauthorized

httpiis-7.5windows 7

I'm trying to test my ASP.Net website on localhost and I'm getting this error:

HTTP Error 401.3 - Unauthorized
You do not have permission to view this directory or page because of
the access control list (ACL) configuration or encryption settings for
this resource on the Web server.

I have the following users on the website application folder, with full read/write permissions:

  • NETWORK SERVICE
  • IIS_IUSRS
  • SYSTEM
  • Administrators
  • Nathan (me)

What can I try to fix this?

Best Answer

IIS 7 also creates "IUSR" as default user to access files via IIS. So make user IUSR has read access to files/folders.

How to check if IUSR has read Access? Right Click -> Folder -> Properties -> Security Tab See if IUSR is in Group or user names list, If No.

Click Edit -> Add -> Advanced -> Find Now -> Select IUSR and click OK four times

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