Windows XP SP3 Setup Error: Cannot Update a Checked (Debug) System with a Free (Retail) Version of Service Pack 3



As we all know Microsoft has released the final version of Windows XP SP3 to public and its available via Automatic Updates, Windows Updates and Downloads Center.

Earlier we posted about it at following link:

Windows XP SP3 RTM Available on Windows Update, Automatic Update and Download Center

You can download the SP3 from the above mentioned link.

I have received a few mails mentioning a strange problem which occurs while installing SP3 in Windows XP. A few ppl told me that whenever they try to install SP3 in Windows XP, Windows shows following error message:

Service pack 3 setup cannot update a checked (debug) system with a free (retail) version of service pack 3, or vice versa.

The reason behind this problem is that the update package installs retail bits on retail builds and checked bits on checked builds. But you can spoof Windows updates in order to install retail bits on checked builds and vice versa.

If you are also facing the same problem, then follow these simple steps and your problem should be solved:

1. Open regedit and goto:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

2. In right-side pane look for a String value "CurrentType". Change its value to Checked and if its already set to Checked, then set it to Free and click on OK.

3. Exit registry editor and try to install SP3 again. Now it should install without any problem.



This article was posted in Troubleshooting, Windows XP.

Subscribe to RSS Feed | Email Newsletter | More Articles

Related Articles

Popular Articles



74 Comments

  • Aditya: First you click on start --> run. Type in Regedit. In regedit you go to the path HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion On the right side you find currenttype --> doubleclick and change the value :) Hope this helped

  • thnx a million Ernie..

  • thanks. it worked

  • you rock vishal

  • thanx for the solution, it worked!
    anywayz, facing another problem, it said i can't install sp3 on top of my older sp3

  • VG

    ^^ Thats true. You'll have to uninstall previous SP3 Beta or RC before installing this new final version.

  • Mine said "Multiprocessor Free" so I changed it to "Checked" and it worked like a charm. Thanks!

  • VG

    ^^ Glad to know it worked for you. :)

  • :smile: I install sp3 a few days before after full installation it forms a loop

    it restart> boot up > restart >..............................

    what's that mystery ..............????? :razz:

    vg do u have any solution

    another dude named :???: lucas :???: above in forum have same problem

    :evil:
    > i have dwnld > it pro pack

    > changed from Multiprocessor Free to checked >...................!!!! :cry:

  • VG

    ^^ Some motherboard do have problems with SP3 which ends in restarting loop. Try to slipstream SP3 in XP setup and then reinstall it.

Add a Comment

NOTE: If you can't see your comment, please be patient. It'll appear as soon as we approve it.


Create an avatar that will appear with your comment.