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Microsoft Windows 8.1

Codename Blue
Kernel WinNT6.3
Architecture
  • x64
  • x86
Language
  • Arabic
  • Bulgarian
  • Chinese Hong Kong SAR
  • Chinese Simplified
  • Chinese Taiwan
  • Show more languages (+32)
Release date 18/10/2013
Support date 09/01/2018
Extended date 10/01/2023
SKU
  • China
  • Core
  • Core Connected
  • Core Connected Country Specific
  • Core Connected Single Language
  • Show more SKUs (+8)
Replaces Microsoft Windows 8
Replaced Microsoft Windows 10

Buildlist (19)

Sort builds from new to old

Milestone 1

6.3.9364.0
6.3.9369.0

Milestone 2

6.3.9374.0
6.3.9385.0

Milestone Preview

6.3.9431.0

Pre-Release To Manufacturing

6.3.9471.0
6.3.9477.0 (fbl_partner_out31)
6.3.9483.0

Release To Manufacturing

6.3.9600.16384

Windows 8.1 General Availability Update

6.3.9600.16404 (IR1)
6.3.9600.16422 (IR2)

Windows 8.1 Update Pre-Release

6.3.9600.16596
6.3.9600.16610
6.3.9600.17019
6.3.9600.17024
6.3.9600.17025

Windows 8.1 Update

6.3.9600.17031 (IR3)
6.3.9600.17238 (IR4)
6.3.9600.17415 (IR5)