I’ve given the Windows Genuine Advantage tool a try on several PCs using a legitimate version of Windows with both Internet Explorer and Firefox. For the Windows Update, all showed no issue and the same went with downloading updates that requires validation using Internet Explorer. Interestingly, on Windows 2000 PC’s, I get “Genuine Windows Software”, where as on Windows XP PC’s, I get “Thank you for using Genuine Windows”. However, if I use Mozilla Firefox, it passes on all but one Windows 2000 based PC. Apparently I get the following error when I run the validation tool: [I]Code not available. The validation code could not be obtained. This may be due to technical difficulties, or you may be running an unsupported operating system. Please close this window and attempt the validation process again, or use the Back button in your Web browser to return to the download details page. [Error code: 0x80040265][/I] The next page shows “Thank you for taking part in genuine Windows validation. …” Once I click ‘Continue’, it shows “Validation Not Complete: Expired Validation Code”, along with the option to obtain Genuine Windows Software, contact my reseller or turn on automatic updates.