// Microsoft Office
(18 editions)
// Applications
(8 versions)
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Mon–Fri 08 – 18
// Windows
(12 Total)
// Frequently bought
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Windows 8.1 Professional
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Windows 8.1 Professional
Product Info
Why Windows 8.1 Professional Windows 8.1 Professional is the extended variant of Windows 8, which is designed specifically for touchscreens and, with this type of platform, offers professional users and businesses optimised support for their work. The Windows 8.1 Professional operating system not only runs on compatible tablets and handhelds, it can also be used as usual with a mouse and keyboard on a laptop or desktop computer. Microsoft Windows 8.1 Professional supports its users with a redesigned interface, an optimised system and new functions and programs in just the right measure. As an extension of Windows 8 Professional, the Windows 8.1 Professional operating system is likewise aimed at professional users and small businesses. The interface in Microsoft Windows 8.1 Professional has been designed to be user-friendly for use with touchscreens. Thanks to the tile format, you always keep an overview of the most important applications and documents and can access them quickly. In general, the Windows 8.1 Professional operating system has been optimised so that, for example, copying and system processes have been sped up. This gives all devices a functional and powerful operating system that impresses not only with new features and design changes, but also with a performance boost. What is new in the Windows 8.1 Professional operating system The Windows 8.1 Professional operating system brings numerous new features with it. It has the following new core functions, some of which can also be found in Windows 8: Modern User Interface: tile interface for touchscreens Internet Explorer 11: new Windows web browser Optimised data transfer: copy operations can be paused and resumed New Task Manager: processes are managed to boost performance Windows Store: for obtaining Modern apps Windows Defender: anti-spyware In addition, Microsoft Windows 8.1 Professional also has all the functions of Windows 8 Pro, such as Remote Desktop, domain join, Encrypting File System, Group Policy and booting from a Virtual Hard Disk. The update to the Windows 8.1 operating system also added many more features and optimisations. Optimisations in the Windows 8.1 Professional operating system Compared with Windows 8 Professional, Microsoft Windows 8.1 Professional introduced a number of visual and system-level optimisations. The most noticeable difference is the option of displaying the desktop in tile form or in the classic style. The Start menu of the Windows 8.1 Professional operating system can now also be displayed with the right mouse button when needed, similar to Windows 7. This means users are supported with the appropriate setting both when operating via touchscreen and when using a mouse and keyboard. Windows 8.1 Professional also adds numerous new pre-installed Modern apps. The existing apps such as "Video", "Music", "Camera" and "Photos" have also been expanded in functionality in the Windows 8.1 Professional operating system. Powerful Microsoft Windows 8.1 Professional Thanks to the numerous new features and the interface optimisation, the Windows 8.1 Professional operating system creates a strong platform that actively supports professional users and small businesses in their tasks with its new features and programs. Thanks to the performance boost, Windows 8.1 Professional is a reliable operating system. The more modern user interface and the Modern apps give you an up-to-date system for both handhelds and desktop computers.
// Scope of delivery
License key
XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
25-character original Microsoft key
Software download
Microsoft-signed original setup file
Installation & activation guide
Step-by-step through both processes, in German
VAT invoice
Proper proof of purchase as a PDF
Instantly by email after payment is received. Please also check your spam or junk folder if needed.
Buyer Protection

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// Why Keywi24
5+ years of industry experience
Software licenses are our craft. Thousands of satisfied customers.
EU-compliant & verified
Exhaustion principle per ECJ ruling C-128/11. Every key documented.
90 days of personal help
Real people, not an AI chatbot or call center.
100% original licenses
From verified European license stock. Genuine Microsoft keys with VAT invoice.

// Legal certainty
Legally on the safe side, personally checked.
The resale of used original licenses is confirmed by the highest courts (CJEU C-128/11, Art. 12(2) URG). Every license at Keywi24 comes from verified European license stock.More on legal certainty
// It's that easyIn 3 minutes to your licensed software
Buy
Order at a great price – you receive everything by email
Download
License key and download link arrive instantly by email.
Activate
Install. Enter the license key. Done.
90 days of installation help included

- •Included with every purchase
- •Friendly help from
real people - •If something doesn't work,
we'll help you
We help you free of charge for 90 days with installing and setting up your software.
Available weekdays 8:00–18:00 via and * (optional). Remote help only with your consent. Cancel anytime.
System requirements
| Component | Minimum |
|---|---|
Processor | 1 GHz or faster with PAE, NX and SSE2 |
Memory | 1 GB (32-bit) / 2 GB (64-bit) |
Storage | 16 GB (32-bit) / 20 GB (64-bit) |
Graphics | DirectX 9 with WDDM 1.0 driver |
Display | 1024 × 768 pixels (at least 1024 × 768 for Microsoft Store apps) |
License Activation still possible, but no new security updates. | Microsoft support ended on 10 January 2023 |
- Processor
- Minimum
- 1 GHz or faster with PAE, NX and SSE2
- Memory
- Minimum
- 1 GB (32-bit) / 2 GB (64-bit)
- Storage
- Minimum
- 16 GB (32-bit) / 20 GB (64-bit)
- Graphics
- Minimum
- DirectX 9 with WDDM 1.0 driver
- Display
- Minimum
- 1024 × 768 pixels (at least 1024 × 768 for Microsoft Store apps)
- LicenseActivation still possible, but no new security updates.
- Minimum
- Microsoft support ended on 10 January 2023
Ready right away thanks to ESD
After your purchase you don't have to wait for the postman. Thanks to Electronic Software Delivery you receive your license key, download link and installation guide within seconds by e-mail — and install immediately.
- Seconds instead of days
- Original software from our download library
- Offline use & data-protection compliant









