The operating system licenses which are granted under the upgrade license programs basically are upgrade licenses only. Full operating system licenses which are not available under these programs, so that each computer on which you run the Windows Vista Business Upgrade or Windows XP Professional upgrade must be licensed to run one of the qualifying operating systems that are basically identified in this article.
Information about Windows XP Pro and Windows Vista Business upgrade licenses
If you acquire the Windows XP Professional license or you want to acquire the Windows Vista Business upgrade license by using the Select License program or the Open License program, then you must have a licensed, which are the qualifying version of Windows installed.
For performing these situations, you must meet the following conditions:
The qualifying version of Windows must be installed on the computer and in this condition you will assign the volume licensing upgrade license. If you want to remove the qualifying version of Windows in order to deploy the volume licensing upgrade license then the following table lists the qualifying operating systems. You will run more than one licensed version of Windows at the same time, you have the following options like; you have to acquire Software Assurance for your volume licensing upgrade license and you also have purchase full Windows Vista licenses separately. Its very important to know that, Microsoft does not offer licenses for full versions of Windows under the volume licensing agreement. If you have active Software Assurance coverage then you do not have to uninstall the qualifying version of Windows and for that reason you can easily install and run the qualifying version of Windows and Windows Vista at the same time.
If you want to acquire an upgrade license together with Software Assurance for Windows XP Professional or for Windows Vista Business, then you have the following options. At first you have to acquire Windows XP Professional and Software Assurance or Windows Vista Business upgrade and Software Assurance for all qualified computers in the installed base. Now the installed base is the set of qualified computers which owned by you and your covered affiliates as of the effective date of the enrollment or agreement. Now you must have licensed and you must have to install one of the qualifying operating systems which are listed in the “New EA/OV-CW” column of the Windows upgrade table on all the qualified computers in the installed base.
Now if you want to acquire Windows XP Professional and Software Assurance or Windows Vista Business upgrade and Software Assurance for all new and replacement qualified computers then all qualified computers which were acquired from an original equipment manufacturer during the term of the Enterprise enrollment, that must be licensed to run one of the qualifying operating systems which are listed in the “Existing EA/OV-CW” column of the Windows upgrade table. Now this term can includes any renewal or successive term. Now if all qualified computers which were acquired from other sources during the term of the Enterprise enrollment on which the Windows operating system will be run, that must be licensed to run one of the qualifying operating systems which are listed in the “New EA/OV-CW” column of the Windows upgrade table. And all these computers include computers that you acquired through merger or acquisition.
