How to Activate Windows 11. When the installation is complete, you'll need to activate Windows 11 before you can use it. Just choose Settings > Security > Activation > Update Product Key > Change Product Key from the Start menu. If you already own a Windows 11 product key, you can enter it and use the software right away. Windows 8/8.1. After a fresh install, the system does not auto activate and when one tries to enter the correct OEM Product Key (extracted from BIOS), it is refused. The trick is to first remove the current Product Key with slmgr /upk, then the OEM key can be entered and activation works flawlessly. Google Reviews 4.9 226 reviews. Buy Windows 8.1 Pro for the best price at LicenceDeals. Order now and we will send you the activation key for Windows 8.1 licence directly via e-mail. This is a one-time licence and the activation key is only valid for installation on 1 PC. This activation key ONLY WORKS WITH Windows 8.1 Pro. This activation key WILL NOT ACTIVATE Windows 8.1 OR Windows 8. No other Windows versions can be activated with this key. WIN 8.1 PRO MEDIA CENTER EDITION CAN NOT BE ACTIVATED WITH THIS KEY. WIN 8.1 PRO N CAN NOT BE ACTIVATED WITH THIS KEY. WIN 8.1 PRO K CAN NOT BE ACTIVATED WITH THIS KEY. I purchased Windows 8 pro upgrade from Win 7 ($40 Win upgrade offer) also I got a free Windows Media Center Addon Pack key. Currently Mys system is : Windows 8 Pro with Media Center. After reading other questions i found that to install Windows 8.1 standalone i have 2 options. Windows Store; MSDN/Torrent iso download and use a defualt key to Step 1: Click the Start button and enter PC settings in the search box. Step 2: From the PC settings window, select Activate Windows. Step 3: Copy a Windows 8.1 product key from this post, paste it on your computer, and click next. Step 4: Follow the instructions on your screen. A digital product key (DPK) is installed on the motherboard BIOS during the manufacturing process. Windows 8 will activate automatically the first time the computer is connected to the Internet. With OA3-activated systems, most of the computer's hardware can be replaced without the need to reactivate the software through Microsoft. Dear Microsoft Community. Our company currently has all machines running on Windows 8.1 Professional (using an 8.1 upgrade volume license). The reason we are on professional and not basic is to be able to connect to our active directory domain. My assumption here is that we will be allowed to upgrade to Windows 10 for free. My questions are: 1 .

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