The calls keep coming in. Windows 10 Upgrade faults are relatively few. The slow operation, No Cortana, Email sending issues, Unable to upgrade, Stuck while upgrading. All of these faults have been rectifiable. So what is the advice for the faint hearted, If you are on Windows 7 then my advice is to stay on Windows 7 for a few more months to let the masses report any faults and Microsoft can iron them out. If you are up to the challenge and can ride the bumpy highway then you can respond to the upgrade prompts. If you have not had the upgrade prompts you can force the update and jump the line using the Windows 10 Media downloader . Enjoy the ongoing development of Windows 10 as so far I am quite pleased.