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SharePoint Central Administration – Service Unavailable HTTP Error 503

May 28th, 2010

Today when I after installing the active directory on my SharePoint box, I found that all of a sudden my Central Administration site stopped working. And keep on giving error message

Error: Service Unavailable HTTP Error 503. The service is unavailable.

In IIS console I noticed that App Pool for the central administration site was stopped. I restarted it, but again when I tried to open the site. App pool stopped again. And this happen again and agin. After spending some time. I realized that because I installed active directory, I need to refresh crendtails attached to App pool.

To change the identity acount attached to app pool, select app pool and right click on it. Select the ‘Advanced Settings’.

One thing to notice is that previously if you defined the user like servername\administrator, then it won’t work now. If you use this way it will give message that username doesn’t exist. Because now you have set up the Active Directory.

 Just use administrator and password and it will work or use domain/username and password.

I hope it will help.


  1. July 27th, 2010 at 09:25 | #1

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  2. July 28th, 2010 at 11:25 | #2

    This has just solved my problem too! After a restore of the content databases to an exisitng farm, we couldn’t access anything – either Central Administration or the site.

    Refreshed the users as per the above and all working.


  3. SAYED
    August 9th, 2010 at 14:05 | #3

    Open the command line and navigate to the Progarm Files\Common Files\Microsoft Shared\web server extensions\12\BIN folder.
    Type the stsadm -o updatefarmcredentials -userlogin -password
    Reset IIS by typing iisreset /noforce to restart the Web application pool.
    After you complete these steps on the computer running Central Administration, you should perform the following steps on every server in the farm:

    Open the command line and navigate to the Progarm Files\Common Files\Microsoft Shared\web server extensions\12\BIN folder.
    Type stsadm -o updatefarmcredentials -userlogin -password -local

  4. admin
    August 10th, 2010 at 01:02 | #4

    I’m glad it helped you.

  5. September 2nd, 2010 at 02:50 | #5

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  6. Rahul Vartak
    September 11th, 2010 at 07:49 | #6

    Thats what you call …’Hitting the nail !!’

    Thanks man

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  11. Gabriel Lehmann
    October 23rd, 2010 at 06:06 | #11

    Yeah, it works. You’re help me today. :-) . SharePoint 2010 has many great features and I really like it. My company trust http://www.asphostportal.com to host our sharepoint site. This is the great provider. Besides the low rate, their support is great too. I really recommend them if you want to host your sharepoint site.

    Thanks once again to help me…

  12. October 25th, 2010 at 02:55 | #12


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  13. November 28th, 2010 at 04:02 | #13

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  17. admin
    September 1st, 2011 at 22:20 | #17

    Can you please let me know what is the exact error message you got? As it is working fine for me.
    Also I would recommend to try again and if you still face issues please do let me know. I will try to sort out the issues.

  18. September 4th, 2011 at 00:13 | #18

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