After the upgrade completed, if you decided you then needed windows 8.1 pro features, you could use the embedded “add features to windows 8.1” option and get the windows 8.1 pro pack for the cost of $99.99 as is stated on this microsoft windows page.. On which os you are.. you may use windows anytime upgrade or windows upgrade assistant app. to upgrade your windows. if you are already on windows 8 first upgrade to windows 8.1 then upgrade to pro using the key or buying the key from windows anytime upgrade .. if you are on windows 7 then you may need to use windows upgrade assistant software from ms website it will guide you to create. I have a full version of windows 8 pro. i recently purchased a laptop with windows 8.1 standard and am trying to use the windows 8 pro key to upgrade the 8.1 to the pro version..
Windows 8.1 pro upgrade key good for windows 10 it came with version 1709 from the factory. i tried several different product keys i have for windows 10 pro to do the upgrade to pro and all of them i had were rejected.. In short, you'll have to go into the windows store, and find windows 8.1. during the installation, you'll have to give the cd key you bought. windows anytime upgrade is only meant to change between different editions of the same os (8 an 8.1 are seen as two distinct os).. Products › microsoft › windows › 8.1 › professional › microsoft windows 8.1 pro pack pro upgrade download. mfr # 5vr-00139 microsoft windows 8.1 pro pack pro upgrade download. digital download order before 5:00 pm pt to receive within 30 minutes* ask a question i purchased an upgrade key for a microsoft product. mychoicesoftware.