HTTP Error 401.3 - Unauthorized

Question

I am getting this errror in my newly created website in Windows 7 and IIS 7.5. I created an SSL certificate and done binding new website.

HTTP Error 4

Answer 1

IIS 7 also creates "IUSR" as default user to access files via IIS. So make sure 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 -->click Apply

Answer 2

Make sure that application pool of your website and website both are running under the same identity. Then make sure that this identity has required permissions on the virtual directory. I had exact same issue and above two checks fixed it.

Answer 3

I had the same issue, ensured my DefaultAppPool was running under ApplicationPoolIdentity and the DefaultAppPool had permissions to the folder, but some files still didn't load.

Turns out my problem was that the anonymous authentication user was set to someone else instead of ApplicationPoolIdentity

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