Welcome to VrF Store. Item details Product: License Windows 8.1 Pro Product type: License - License can only be used for 1 pc. - Lifetime/Permanent License. - License can be transferred to another computer. - License can be activated on 32 and 64 bit PCs. - Retail license type. - Get a guarantee from the shop if the license cannot be activated/cannot be used. Questions regarding License Key. (Q) What is the Retail license type and how is it different from other license types? (A) Windows retail licenses are usually called FPP (Full Packed Product). This license is usually obtained at retail stores or online stores. Retail licenses can be transferred from PC 1 to another PC. (Q) How long is the Windows 8.1 Pro license? (A) Lifetime license duration. 3 month guarantee. Before placing an order, please: 1. Please check and ensure that the windows that have been installed are the same as the code purchased. 3. Check if the product key is still there in the windows that will be activated, if there is, use the command "slmgr /upk" - uninstall the existing product key and "slmgr /cpky" - delete the registry product key. *The price could changes every time. Thank You.