I went to central admin via the host name (http://portal.company.com:75000) and went to "Site Actions > Site Permissions" then clicked on "Check Permissions" and a dialog box poped up to enter user/group name. I input user id and resolved it by clicking the man icon. Then clicked on "Check Now" and got an error "File Not Found".

I followed the exact same steps via this url http:/server:75000 and did not get the error.

How do I fix this?

  • 1
    Can you share the details of your Alternate Access Mapping settings for the central administration web application running on port 75000
    – ArkoD
    Jun 11, 2012 at 13:36
  • are you trying on the server itself? If yes, do you experience this behavior using "Run as administrator" on IE ?
    – Steve B
    Jun 11, 2012 at 14:12

1 Answer 1


Both comments mentioned so far as possibilities. Also I'd suggest looking at LoopBackCheck: http://support.microsoft.com/kb/896861 or switch the authentication method for Central Admin from Kerberos to NTLM if possible (ask your administrators about this, they may not appreciate this).

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