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Apparently within the last 3-4 weeks we lost our ability to get into Central Administration. Now when I or the other SA tries to get to the URL with port it asks us to authenticate again and doesn't take our credentials. (Directly on server, as we've always done it.) Tried our domain accounts and local admin account on the box.

We were trying to get in there because some Sharepoint database on C: exploded in size the last week or so and filled up the drive and the setting is in... Central Administration. It's awesome troubleshooting an interface to be able to get in to troubleshoot the initial problem.

No changes have been made on this server as the departing SharePoint guy apparently left them in a test OU with no GPOs, it doesn't have firewall/McAfee... Not sure what could have changed.

Appreciate any advice.

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  • After you fixed that CentralAdmin-Problem, you should move your Databases off the C: drive. It's only a matter of time when this will repeat.
    – MHeld
    Commented Jul 29, 2019 at 6:13
  • Definitely. After seeing all of the comments in SharePoint Health Analyzer I am trying very hard to not become the new SharePoint admin... I have no experience with SharePoint and this system appears to have many things that need to be be looked at. On a side note, I got CA back but not quite sure exactly how. Last change I made was setting CA App Pool identity to Network Service then back to service account. I could then get back in. Could be coincidence.
    – Ben L
    Commented Jul 30, 2019 at 7:58

1 Answer 1

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Is the URL the same as the server’s hostname?

If not, then you’re experiencing the classic NTLM loopback issue.

Access CA from a different host, add the hostname to the backconnectionhostnames registry setting or disable loopback checking entirely (not recommended). See https://support.microsoft.com/en-au/help/926642/error-message-when-you-try-to-access-a-server-locally-by-using-its-fqd for instructions on the second (Method 1) and third (Method 2) options.

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  • Thank you for the reply. Address is hostname:port. I even had taken some notes and screenshots last time I was in here so I know I'm not crazy...
    – Ben L
    Commented Jul 27, 2019 at 9:24
  • But is the hostname the same as the server’s name?
    – Greg W
    Commented Jul 27, 2019 at 9:24
  • Yes, it's the same.
    – Ben L
    Commented Jul 27, 2019 at 9:27
  • Hmm. Then loopback isn’t the issue. It normally manifests in repeated prompts for credentials before sending a 401 back even if they’re correct.
    – Greg W
    Commented Jul 27, 2019 at 9:28
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    No errors? What you may be able to do is remove and reprovision CA if it’s “broken”. You’ll need to Google the procedure. But first check if you can use the shell to do what you needed to do in CA first.
    – Greg W
    Commented Jul 27, 2019 at 9:48

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