Here is good webiste to download - Windows 8.1 Lastest Windows 10/11
Product
Windows 8.1 Single Language (Build 9600.17415)
Windows 8.1 (Build 9600.17415)
Windows 8.1 N (Build 9600.17415)
Windows 8.1 K (Build 9600.17415)
Windows 8.1 KN (Build 9600.17415)
Windows 10 22H2 Home China (Build 19045.2006)
Windows 10 22H2 v1 (Build 19045.2965)
Windows 11 23H2 v2 (Build 22631.2861)
Windows 11 23H2 Home China v2 (Build 22631.2861)
Windows :
Windows 11 / 10 / 8.1 - Microsoft - MSDL
Windows 10 / 11 Enterprise LTSC
Windows Insider 10 / 11 - Server
Office:
Office C2R Custom Install (Retail / VL)
After install Windows or Office, here is activation methods:
Microsoft Activation Scripts (MAS)
Open-source Windows and Office activator featuring HWID, Ohook, KMS38, and Online KMS activation methods, along with advanced troubleshooting.