Please send your comments and any recommended revisions to Erik Eckel. The problem You discover that invalid product keys were supplied for a Windows XP Professional installation, or you receive an invalid product key error when attempting to install a Windows XP Professional service pack, and you don't wish to reinstall Windows XP Professional to correct the situation.
The cause Windows Product Activation prevents software deployments that use invalid product keys or pirated product IDs. The solution Note. Editor's Picks. The best programming languages to learn in Check for Log4j vulnerabilities with this simple-to-use script. Tips and Warnings. Related Articles. Author Info Last Updated: June 3, Method 1.
Type 'Regedit' in the white text field, and click OK. This should open the Registry Editor. Navigate to the following registry key. Select 'Yes, I want to telephone a customer service representative to activate Windows', then click next. Type the new product key into the small white text fields and then click update.
Check that you get a message similar to 'You have successfully activated your copy of Windows. Method 2. Click Next. This tool will scan your system for any inconsistency or errors. Wait for the scan to finish. Type in the new product key. You might be required to activate your system again. Restart your computer.
This will allow the changes to take place. Jarod Smith. If the product key isn't working, there is something wrong with the OS. It also might be due to the fact that Windows XP has stopped being supported. You can try updating Windows. Yes No. Not Helpful 0 Helpful 6. Include your email address to get a message when this question is answered. MajorGeeks Windows Tweaks.
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