Windows 8.1 brings together everything you do from new mobile apps for your business, to Office productivity work, to searching and browsing, to accessing all your data from anywhere. Your Windows experience works across all your devices from the best business tablet, to a thin and light notebook, to your high-performance workstation or all-in-one, whether you are at home, in or around the office, or working on the road. And Windows takes care of the essentials now letting you manage personal devices in your organization, utilize your investments in your enterprise infrastructure, and enhancing the security of your environment.
Windows 8.1 AIO x64 en-US Pre-Activated Contains KB files current to Nov12-2013.

This release is the best you could find on the net, because:
- No Windows 8.1 Settings were harmed in the making of this ISO.
- No Programs are added to Windows.
- No Registry Settings were modified.
- No Unattended Settings were added to the ISO.

DISC#1:
32-bit RTM Sources:
en_windows_8_1_x86_dvd_2707392.iso
en_windows_8_1_n_x86_dvd_2707895.iso
en_windows_8_1_pro_vl_x86_dvd_2791634.iso
en_windows_8_1_pro_n_vl_x86_dvd_2791509.iso
en_windows_8_1_enterprise_x86_dvd_2791510.iso
en_windows_8_1_enterprise_n_x86_dvd_2791297.iso
9600.16384.130821-1623_x86fre_Client_SingleLanguage_EN-US-IRM_CSLA_DV5.ISO
These RTM Sources are the final Build 9600

Installation Indexes:
Windows 8.1 (Core) x86 / KMS-Activated
Windows 8.1 (Core) N x86 / KMS-Activated
Windows 8.1 (Core) Single Language x86 / KMS-Activated
Windows 8.1 Pro x86 / KMS-Activated
Windows 8.1 Pro N x86 / KMS-Activated
Windows 8.1 Pro with Media Center x86 / KMS-Activated
Windows 8.1 Pro VL x86 / KMS-Activated
Windows 8.1 Pro N VL x86 / KMS-Activated
Windows 8.1 Enterprise x86 / KMS-Activated
Windows 8.1 Enterprise N x86 / KMS-Activated
Release File: Win81AIO-20in1-x86-en-US-Nov2013.iso
Size: 2.92 GiB

DISC#2:
64-bit RTM Sources:
en_windows_8_1_x64_dvd_2707217.iso
en_windows_8_1_n_x64_dvd_2707896.iso
en_windows_8_1_pro_vl_x64_dvd_2791292.iso
en_windows_8_1_pro_n_vl_x64_dvd_2791264.iso
en_windows_8_1_enterprise_x64_dvd_2791088.iso
en_windows_8_1_enterprise_n_x64_dvd_2791038.iso
9600.16384.130821-1623_x64fre_Client_SingleLanguage_EN-US-IRM_CSLA_DV5.ISO
These RTM Sources are the final Build 9600

Installation Indexes:
Windows 8.1 (Core) x64 / KMS-Activated
Windows 8.1 (Core) N x64 / KMS-Activated
Windows 8.1 (Core) Single Language x64 / KMS-Activated
Windows 8.1 Pro x64 / KMS-Activated
Windows 8.1 Pro N x64 / KMS-Activated
Windows 8.1 Pro with Media Center x64 / KMS-Activated
Windows 8.1 Pro VL x64 / KMS-Activated
Windows 8.1 Pro N VL x64 / KMS-Activated
Windows 8.1 Enterprise x64 / KMS-Activated
Windows 8.1 Enterprise N x64 / KMS-Activated
These 64-bit Sources are the Final Build 9200. The MSDN ISO source is the best image available on the internet.
Release File: Win81AIO-20in1-x64-en-US-Nov2013.iso
Size: 3.82 GiB
Language: en-US (English – United States)

Tools used:
imagex for /flags “ProfessionalWMC” setting and index renames
dism for set-edition for ProWMC, KB integration, install.esd export
oscdimg for ISO mastering with MS’s default -u1 option
Info folder added to Windows Setup folder to annoy credit theives

DISM /Add-Package KBfiles added:
KB2859675, KB2862152, KB2868626, KB2876331, KB2883200, KB2884846,
KB2887595-v2, KB2888505, KB2894029, KB2894179, KB2898108, KB2898514,
KB2900986, KB2901101, KB2902892, KB2906956, KB2908174

Features:
- Non-Activated and Pre-Activated indexes. Take your pick.*
*Uses custom AutoKMS_VL_ALL folder in Windows directory. You can uninstall the daily task there if you wish to use a different activator later. I’ve included the uninstall script.
- Highly Compressed install.esd recovery compression format.
- UEFI boot information added to ISO boot data

Notes:
- First proper Win81AIO with pre-activation
- All indexes use original MSDN 9/9 Win8.1 isos with integrated hotfixes.
- Added ei.cfg to sources\ directory. You *HAVE* to extract the iso and delete the file if you want to upgrade from a previous version of Windows. Use the win81-pkeys.txt on the ISO for install keys.

Download Links For Winodws 8.1 32bit OS (2.83 GB):
Download Links For Windows 8.1 64bit OS (3.66 GB):