What you will get: • 25-digit license. • Permanent/Lifetime, Retail Digital License. • Minimum requirement: Windows 10 from 2021 (21H1). • Online activation via the activation menu. • We only sell licenses. So, make sure you can install Windows yourself using an original ISO, not a modded ISO. We can provide the ISO if needed. • For Windows 10 Pro only. For Home and Single Language versions, we will provide a tutorial link to convert to Pro. For N and KN versions, reinstall or upgrade to Pro first. This key is also legal and will activate automatically when upgrading from Windows 10 to Windows 11 via Windows Update. • License error? Just chat us with a photo of the activation error, and we will 100% replace the license if it doesn’t work (Only valid for activation within 1 × 12 hours. No warranty after that). • 1 license for 1 device. For reinstalls, please clear the license during installation as it is tied to your laptop/PC. It will activate automatically when online. Warranty is void if the same license is used again (detected as a double device). • We also sell Windows 8.1 Pro keys in the Windows 8.1 category and Windows 11 keys in the software category. • Delivery via chat takes 10 to 30 minutes. Please be patient. • Buyers are expected to respond quickly in chat or stay standby on Itemku for further info.