Windows 8.1 is a major release of the Windows NT operating system developed by Microsoft. It was released to manufacturing on August 27, 2013, and broadly released for retail sale on October 17, 2013, about a year after the retail release of its predecessor.

[ RELEASE INFO ]
* File: W81X64.PROVL.ENU.SEP2021.iso
* Size: 3,70GB
* Format: Bootable ISO
* SOURCE: dvd-6050880
* CRC32: 0e9a307e
* MD5 : 247a4093b95cbf20ba96cf8965e4beb5
* SHA-1: 95217299f213ed5787dde051956f795e804fb082

[ CONTENTS ]
Integrated / Pre-installed: NET Framework 3.5
* NET Framework 4.8
* Important & Security Only Updates - 2021-09-14
* LANGUAGE: ENGLISH [US]

[ EDITIONS INCLUDED ]
* Windows 8.1 Pro - STD
* Windows 8.1 Pro - KMS
* Windows 8.1 Pro - OEM
* STD = Standard installation - For those with own License Key
* KMS = Activated by KMS_VL_ALL
* OEM (Original Equipment Manufacturer) will automatically
* activate original version installed by Manufacturer.


WHAT'S NEW?
* Integrated / Pre-installed: NET Framework 3.5
* NET Framework 4.8
* Important & Security Only Updates - 2021-09-14