I purchased (a legal copy of) an upgrade from Windows XP (also legal) to Windows Vista Home Premium at Microsoft's webstore. However, during the installation, after about 6% copying files, I get the error message "Windows cannot copy files required for installation. The files may be corrupt or missing. Make sure all the files required for installation are available, and restart the installation. Error code: 0x80070241".
The problem is you can only get support from Microsoft after the activation of Vista, which is of course not possible if you don't get it installed. So, how to solve the problem?