- Out-of-Stock
Microsoft Windows 8.1 Pro
€74.90
Tax included
Natychmiastowa dostawa e-mail
- Period of use: unlimited / indefinite
- Number of devices: 1
- Platform: PC
- License type: Lifetime
- Downloading software: On the official Microsoft website
- Key type: ESD/Retail
A new system created for the most demanding users? Windows 8 Pro is an operating system designed for users who require advanced features, both for work and for everyday use. This system provides fast access to modern applications, but what sets it apart is support for networking functions and security features, making it an excellent choice for business environments.
Windows 8.1 Professional
A classic operating system with the Start screen and full support for older hardware
Lowest price 
Activation key 
Instant deliveryWindows 8.1 Pro — for older hardware and specialist use cases
Windows 8.1 Professional is a Microsoft operating system with a modern Start screen and full classic desktop support. When you buy a Windows 8.1 Pro activation key from Licensier, you receive a legal license for a system that still performs well on older hardware and in specialist environments. BitLocker, Hyper-V, Remote Desktop and domain join — all Professional features available for a low one-time fee.
Windows 8.1 Pro is a proven operating system that combines a modern Start screen with the classic desktop experience. Although Windows 10 and 11 are newer versions, Windows 8.1 Pro is still used on older computers, in industrial environments, and wherever compatibility with specific software or hardware is required. A Windows 8.1 activation key from Licensier is the cheapest possible way to get a legal Microsoft license.
Ideal for
For older computers
Low system requirements — 1 GB RAM, 1 GHz processor. Runs on hardware that does not support Windows 10/11.
For industrial environments
Compatibility with older specialist software and drivers for industrial devices.
For kiosks and terminals
A stable system for information kiosks, POS terminals, and single-purpose machines.
For budget-conscious buyers
The cheapest Windows license with Pro features. Ideal when your budget is limited.
Key features
Start screen + Desktop
A combination of the modern tile-based Start screen and the classic Windows desktop. Switch between modes as needed.
Internet Explorer 11
Built-in browser with support for HTML5, CSS3, and modern web standards. Compatible with websites that require IE.
BitLocker
Full disk encryption that protects data from unauthorized access. This feature is available exclusively in the Professional edition.
Hyper-V
Built-in hypervisor for running virtual machines. Test systems and applications without risking your main environment.
Remote Desktop (RDP)
Full Remote Desktop host support — connect to your computer from anywhere in the world.
️SkyDrive (OneDrive)
Microsoft cloud integration for syncing files, documents, and settings between devices.
Domain and Group Policy
Active Directory domain join and Group Policy management. Full integration with business environments.
Low system requirements
Runs on computers with 1 GB RAM (32-bit) and a 1 GHz processor. Ideal for older hardware that does not support Windows 10/11.
Why buy from Licensier?
Licensier offers Windows 8.1 Pro activation keys at the cheapest prices on the market. Every key is original and can be verified directly in the system. Instant email delivery and activation guarantee included.
Although Windows 8.1 is no longer officially supported by Microsoft, the system still works and remains useful in many scenarios — from older computers to specialist industrial applications. If your hardware or software requires Windows 8.1, we offer legal license keys at the best price.
If you encounter any activation issues, our support team will assist you free of charge. We also offer Windows 10 and Windows 11 keys if you decide to upgrade to a newer system.
System requirements
| Processor | 1 GHz or faster (32-bit or 64-bit) |
| RAM | 1 GB (32-bit) / 2 GB (64-bit) |
| Storage | 16 GB (32-bit) / 20 GB (64-bit) |
| Graphics card | DirectX 9 with WDDM 1.0 driver |
| Display | 1024 x 768 resolution |
| TPM | Not required |
| Internet | Required for activation |
How to activate?
- Receive your activation key by email from Licensier.
- Download the Windows 8.1 Pro ISO image from the Microsoft website.
- Create a bootable USB drive or burn a DVD.
- Install the system on your computer.
- During installation, enter the activation key you received.
- Done! Windows 8.1 Pro is activated.
Windows 8.1 Pro vs Windows 10 — which one should you choose?
Windows 8.1 Pro is a good choice for older hardware and specialist applications that require compatibility with IE or older software. Windows 10 offers a newer interface, longer support, and better compatibility with modern software. If your computer supports Windows 10, choose 10. If you need compatibility with older hardware or software, 8.1 Pro is still a solid choice.
Instant digital delivery
You will receive your product key within minutes after payment is completed
1
Place your order
2
Receive your key
3
Download the system
4
Activate and use
Frequently asked questions
Is Windows 8.1 still supported?
Official Microsoft support for Windows 8.1 ended in January 2023. The system still works, but it no longer receives new security updates. We recommend Windows 10 or 11 for most users.
Is the key legal?
Yes, we offer original Microsoft activation keys. The key can be verified in the system under Settings > PC > Activation.
How do I download Windows 8.1?
The Windows 8.1 ISO image can be downloaded from the Microsoft website. The user needs a product key to begin the download.
Can I upgrade to Windows 10?
Yes, you can upgrade from Windows 8.1 to Windows 10 while keeping your files and settings. This requires purchasing a separate Windows 10 license.
Who is Windows 8.1 Pro for?
For users with older hardware, industrial environments, kiosks, and systems that require compatibility with specialist software.
Is BitLocker available?
Yes, BitLocker is available in Windows 8.1 Professional. It enables full disk encryption and data protection.
Does Hyper-V work?
Yes, Hyper-V is available in Windows 8.1 Pro on 64-bit computers with SLAT (Second Level Address Translation) support.
Is Internet Explorer 11 included?
Yes, Windows 8.1 includes Internet Explorer 11 — the final version of this browser. Useful for websites and applications that require IE.
How many devices can I activate?
One key is intended for activation on one computer.
Is this the cheapest Windows option?
Windows 8.1 Pro is one of the cheapest Windows systems in our offer. Ideal if you are looking for the cheapest way to get a legal Microsoft operating system.
Secure payment
Delivery in minutes
Original key
️Activation guarantee
KS-WIN81-PRO
Data sheet
- Period of use
- unlimited / indefinite
- Number of devices
- 1
- Platform
- PC
- License type
- Lifetime
- Downloading software
- On the official Microsoft website
- Key type
- ESD/Retail
- Area of application
- Home / Business
- Devices
- 1
- Product type
- electronic software distribution (ESD) license
- Language version
- Polish / Multilingual
- Architecture
- 32/64 bit
Specific References
- ean13
- 0885370629385
A new system created for the most demanding users? Windows 8 Pro is an operating system designed for users who require advanced features, both for work and for everyday use. This system provides fast access to modern applications, but what sets it apart is support for networking functions and security features, making it an excellent choice for business environments.