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.

A few people are facing a problem while installing SP3. Whenever they try to install it, Windows shows following error message:
Service Pack 3 setup error. Access is denied.
OR
Service Pack 3 setup error. Service Pack installation did not complete.
If you are also facing the same problem, then follow these simple steps and your problem should be solved:
1. Download and install the Subinacl.exe file from here.
2. Open Notepad and paste following code:
cd /d "%ProgramFiles%\Windows Resource Kits\Tools"
subinacl /subkeyreg HKEY_LOCAL_MACHINE /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CURRENT_USER /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CLASSES_ROOT /grant=administrators=f /grant=system=f
subinacl /subdirectories %SystemDrive% /grant=administrators=f /grant=system=f
subinacl /subdirectories %windir%\*.* /grant=administrators=f /grant=system=f
secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose
3. Save the file with name "SP3.bat".
4. Now right-click on the file and select "Run as administrator". It might take some time to complete.
5. After completion, restart your system and now you should be able to install SP3.
This article was posted by VG in following section: Troubleshooting, Windows XP.
If you enjoyed this article, you can subscribe to our RSS feed or free newsletter to get all new articles directly in your Inbox. Also check out our most popular articles and archive to read other interesting articles. If you have some news or tip to share, please send us.
Peggy Kennedy
I had to uninstall Spy Sweeper to install Windows XP SP3. Now I can't install Spy Sweeperand
I am not able to use wireless internet. I can hardly wait to soo what is screwed up with this upgrade. How do I resolve this???????????????????
spidy
didnt work for me...
probably a hoax yet again...
as these have to be aproved this wont go up, which just proves its a hoax...
Andy
This worked a treat.
I having problems installing McAfee. Their technical department told me this was because I didn't have the latest Windows updates including SP3.
I tried to install SP3 butreceived the access denied error.
Eventually after many hours I found this website and by followingthe instructions above I was able to solve the problem. I hve now successfully installed SP3 and McAfee.
Thank you, I really appreciate your assistance.
MM
HELP!! I've done everything...and now my internet is gone...when I got to Control Panel to see the network connections, and it doesnt open. My media player is nto working either or my speakers...I am not really a Pro on computer, so I am really desperate, since I use my laptop for my business and now I cant use it.. It is URGENT and I will really appreciate if somebody can help me or VG can help me, since I am really desperate.
I dowload de subinacl file and then ran the SP3.bat it took for 3 hours to finish, then I restarted my laptop and then everything was messed up. And of course I can install SP3, it says there is an error.
I prefer to not able to have the SP3 but have my laptop as it was, since it is a very important tool for my everyday work.
Thank you very much for your help.
VG
^^ If you have Windows XP setup CD, boot using it and then select Repair existing Windows installation. It'll take 20-30 minutes and will fix the problem.
MM
Hey VG
thank you for the tip. But I have been looking for the Windows Setup CD and I cant find it...I dowloaded one for floppy disks but my laptop doesnt have any Floppy Drive, is there somewhere I can dowload the Windows XP to repair mine? Coz my computer is getting worst, not only the drivers are not working, the main bar desappears after a while and the windows explorer open by itself.
thanks again,
VG
^^ You can borrow the setup CD form your friend/relatives. The same disc will work on all systems.
Speedy PC
"afsal" said it "Worked like a charm!"
cyklopas
Thanx. THIS HELPED!!!! After 3 months of GOOGLE search, it helped!!!!
Nick
awesome man, thanks a ton!