Microsoft ShopAll Microsoft Products License Key In One Place Filters Reset all × Upgrade × Windows 11 × Windows 7 × Windows 8.1 × Windows Server 2025 × Categories Windows (15) Windows server (4) See more See less Product Version Windows 8.1 (2) Upgrade (3) Windows 7 (3) Windows 11 (9) Windows Server 2025 (4) See more See less Product EditionSelect Categories first See more See less License Term Lifetime / Reusable (3) Lifetime / Onetime (16) License Type Retail (18) MAK (1) OEM (3) Platform Supported Windows (15) Windows Server (4) Users Supported - Select Users Supported -1 User (18)1000 User (1)20 User (2)5 Users (1)50 Users (1)500 Users (1) Devices Supported - Select Devices Supported -1 Device (18)1000 Device (1)20 Device (2)5 Devices (1)50 Devices (1)500 Devices (1) Show (19) Cancel Filtered (19) Reset all × Upgrade × Windows 11 × Windows 7 × Windows 8.1 × Windows Server 2025 × Windows 11 Home to Pro Upgrade Key 5.00 $ – 440.00 $ Buy Now → Windows 10 Home to Pro Upgrade Key 5.00 $ – 11.00 $ Buy Now → Windows 8.1 Upgrade to Windows 10 Professional 5.00 $ – 11.00 $ Buy Now →