Failed to copy files. [Error Code: 0x80070003]

Today I experiences a problem with windows genuine on my purchased (years ago) XP Pro machine. It had a recent updated and for whatever reason it started to claim the installed operation system was an invalid copy of Windows and lets not forget to mention that every link in Windows that popup just happen to take me to a website where purchasing Win 7 was accessible rather than helping me find solutions.Thus the internet search began, following nearly every "Solution" that populated the result page from the search criteria and obviously seemed legitimate.

I finally came across a person who published the very same issue (lucky me), the response from Microsoft was to download a specific program. After Downloading the validation plugin file, it gave me the error upon installation 'Windows Genuine Advantage Notification - Installation Failure. Failed to copy files. [Error Code: 0x80070003]'.I then started to search for this error and stumbled upon a few very unhelpful sites.

One particular site was Microsoft's (big surprise), stating I should download their Windows fix program. In doing so, I didn't see any changes on boot up, nor did it fix the problem I was having with the plug installer. Another site had me extract the downloaded .exe contents and place them into Mozilla Firefox directory. Needless to say that too did not work ether. The one solution that did work and I very much dislike having to do this, was following a simple remove Windows Genuine Advantage. Thanks to http://www.wikihow.com/Remove-Windows-Genuine-Advantage-Notifications for the instructions, the first method worked for me, if it doesn't for you, give the others a try. Good luck...

By reading the following you acknowledged that I'm not responsible for any damages, system failures and or any other weirdness that might happen in a near or distant future.

Method One: Task Manager

1. Run as an administrator with no other user accounts running. 
2. Launch Windows Task Manager (Processes). Leave it open. 
3. Navigate to to C:\Windows\System32, and find WgaTray.exe. 
4. Right-click on WgaTray.exe, and select Delete. Leave the deletion confirmation box open. 
5. Go back to Windows Task Manager and click Wgatray.exe. 
6. Click End Process. When you are prompted for a confirmation to terminate the process, align the “End Process” confirmation box with the previous “Delete File” confirmation box, or at least have them close together. Do this because you'll need to do both actions quickly — at least within 2 or 3 seconds. 
7. Click Yes in both boxes, quickly. Click on Yes on the Task Manager prompt (to “end the process”) and then quickly press Yes on the deletion confirmation (to delete the actual file). You’ll need to repeat this if you miss it. 
8. Launch the Registry Editor. Click Start, then Run, and enter regedit. 
9. Browse to the following location: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify
10. Delete the folder WgaLogon and all its contents. 
11. Reboot Windows XP. 
12. Check your work. As a precaution, after you have followed the above instructions: Go to Control Panel > Security Center > Automatic Update Settings. Select the third option, “Notify me but don’t automatically download or install them." Click OK. The next time the “Windows Updates” icon appears in the system tray, click on the icon and it will display a list of available updates. Windows won’t automatically download and install them anymore. If “Windows Genuine Advantage Notification Tool” is there, unchecked it and press enter to download everything else (if you want to). You can right-click to “hide updates” that you don’t want. Select “Don’t notify me about these updates again”, so that they will be ignored every time updates are downloaded. Just remember, from now on, make sure to check the list of downloads so that you don’t install any new versions of this “tool”.