This is a modified version of Windows 8.1 Embedded Industry Pro. I call it "Windows 9"
It was designed to bring back the UI from Windows 7, while keeping the kernel improvements from 8.1
You need a license key to activate this operating system.
If you are in college, check if you have a Microsoft Imagine subscription. You can usually get an 8.1 Embedded Industry Pro license key from Microsoft Imagine for free.
Windows 9 is x64 only - this will not work on 32 bit systems.
If affected by a black screen issue after windows update, please visit this page for instructions on how to repair.
Screenshot of the system:

Added support for XRechnung 3.0 (UBL) , XRechnung 2.2 (CII) , and PEPPOL BIS 3.0 , ensuring compliance with the latest European standards.
Users can now add internal annotations and "to-dos" to documents, share document links with coworkers, and use advanced assistants for miniature views and structural overviews. GrandTotal 8.0.3.1
A year-to-date comparison was added to the dashboard to help track business growth, along with better visibility for partially paid invoice balances. Core Software Features Settings - GrandTotal Help Added support for XRechnung 3
GrandTotal 8.0.3.1 is a specific maintenance and feature update for the popular Mac-based invoicing and estimating software developed by MediaAtelier . This version (released around mid-2024) introduced key enhancements focused on modern electronic invoicing and workflow efficiency. Key Updates in Version 8.0.3.1 Core Software Features Settings - GrandTotal Help GrandTotal
Introduced the ability to plan routes to a client's address directly through Apple Maps navigation and edit multiple clients simultaneously.
Installation:
1. Download the file using the download link above.
2. Extact the .7z file with 7-Zip
3. Use the included tool to copy the iso onto a USB flash drive that is larger than 4gb
4. Boot to the flash drive
5. Follow onscreen instructions to Install Windows.
Legal:
This image is provided with no license key, therefore it is not an illegal source of windows. Users must provide their own license key for activation.
All pre-installed software/tweaks belong to the companies/people who made it.
Windows 9 might be a registered trademark of Microsoft Corporation, I do not own the term "Windows 9".
Please don't sue me, thanks.
Hi /r/PCMasterRace :)
Hello LinusTechTips :)