Windows 10 Release Preview Channel Build Tracker
This ITPro Today Build Tracker follows the public development cycle of Windows 10 in the Release Preview Channel.
![Windows 10 Release Preview Channel Build Tracker Base Windows 10 Release Preview Channel Build Tracker Base](https://eu-images.contentstack.com/v3/assets/blt07f68461ccd75245/blta6e42849c7475367/6616a9e48a92d61ea3c4571e/windows-10-release-preview-channel-build-tracker-base.jpg?width=700&auto=webp&quality=80&disable=upscale)
Release Date: September 23, 2021
Days Since Last #ReleasePreviewChannel Release: 09 Days (Build 19044.1237)
Release Notes: Releasing Windows 10 Build 19044.1263 (21H2) to Release Preview Channel
Note:
Windows 10 Version 21H1 (Build 19043.1263) also released to #ReleasePreview Channel.
Windows 11 (Build 22000.194) made available as an optional update to eligible PC's in the #ReleasePreview Channel.
Release Date: September 14, 2021
Days Since Last #ReleasePreviewChannel Release: 15 Days (Build 19044.1202)
Release Notes: September 14, 2021—KB5005565 (OS Builds 19041.1237, 19042.1237, and 19043.1237)
Note: These same release notes apply to the 19044.1237 update in this preview channel.
Release Date: August 31, 2021
Days Since Last #ReleasePreviewChannel Release: N/A
Release Notes: Releasing Windows 10 Build 19044.1202 (21H2) to Release Preview Channel
Note: N/A
Release Date: August 31, 2021
Days Since Last #ReleasePreviewChannel Release: 12 Days (Build 19043.1200).
Release Notes: Releasing Windows 10 Build 19043.1202 (21H1) to Release Preview Channel
Note: This same update, Windows 10 (Version 21H2) Build 19044.1202, was also released to the Release Preview Channel for that branch.
Release Date: August 19, 2021
Days Since Last #ReleasePreviewChannel Release: 9 Days (Build 19043.1165).
Release Notes: Releasing Windows 10 Build 19043.1200 (21H1) to Release Preview Channel
Note: N/A
Release Date: August 10, 2021
Days Since Last #ReleasePreviewChannel Release: 11 Days (Build 19043.1151).
Release Notes: Releasing Windows 10 Build 19043.1165 (21H1) to Release Preview Channel
Note: N/A
Release Date: July 29, 2021
Days Since Last #ReleasePreviewChannel Release: 9 Days (Build 19043.1149).
Release Notes: Releasing Windows 10 Build 19043.1151 (21H1) to Release Preview Channel
Note: N/A
Release Date: July 20, 2021
Days Since Last #ReleasePreviewChannel Release: 5 Days (Build 19043.1147).
Release Notes: Releasing Windows 10 Build 19043.1149 (21H1) to Release Preview Channel
Note: N/A
Release Date: July 15, 2021
Days Since Last #ReleasePreviewChannel Release: 9 Days (Build 19043.1083).
Release Notes: Releasing Windows 10 Build 19043.1147 (21H1) to Release Preview Channel
Note: N/A
Release Date: July 6, 2021
Days Since Last #ReleasePreviewChannel Release: 19 Days (Build 19043.1081).
Release Notes: July 6, 2021—KB5004945 (OS Builds 19041.1083, 19042.1083, and 19043.1083) Out-of-band
Note: Out-of-band security update.
Release Date: June 17, 2021
Days Since Last #ReleasePreviewChannel Release: 9 Days (Build 19043.1052).
Release Notes: Releasing Windows 10 Build 19043.1081 (21H1) to Beta & Release Preview Channels
Note: N/A
Release Date: June 8, 2021
Days Since Last #ReleasePreviewChannel Release: 18 Days (Build 19043.1023).
Release Notes: Releasing Windows 10 Build 19043.1052 (21H1) to Beta & Release Preview Channels
Note: Monthly Patch Tuesday Updates.
Release Date: May 21, 2021
Days Since Last #ReleasePreviewChannel Release: 10 Days (Build 19043.985).
Release Notes: Releasing Windows 10 Build 19043.1023 (21H1) to Beta & Release Preview Channels
Note: N/A
Release Date: May 11, 2021
Days Since Last #ReleasePreviewChannel Release: 12 Days (Build 19043.964).
Release Notes: Releasing Windows 10 Build 19043.985 (21H1) to Beta & Release Preview Channels
Note: N/A
Release Date: April 28, 2021
Days Since Last #ReleasePreviewChannel Release: N/A - first release for Windows 10 (Version 21H1) in this channel.
Release Notes: Releasing Windows 10 Build 19043.964 (21H1) to Beta & Release Preview Channels
Note: N/A
Release Date: April 28, 2021
Days Since Last #ReleasePreviewChannel Release: 09 Days (Build 19042.962)
Release Notes: April 28, 2021—KB5001391 (OS Builds 19041.964 and 19042.964) Preview
Note: N/A
Release Date: April 19, 2021
Days Since Last #ReleasePreviewChannel Release: 06 Days (Build 19042.928)
Release Notes: Releasing Windows 10 Build 19042.962 (20H2) to Release Preview Channel
Note: N/A
Release Date: April 13, 2021
Days Since Last #ReleasePreviewChannel Release: 19 Days (Build 19042.906)
Release Notes: April 13, 2021—KB5001330 (OS Builds 19041.928 and 19042.928)
Note: N/A
Release Date: March 25, 2021
Days Since Last #ReleasePreviewChannel Release: 16 Days (Build 19042.867)
Release Notes: Releasing Windows 10 Build 19042.906 (20H2) to Release Preview Channel
Note: N/A
Release Date: March 9, 2021
Days Since Last #ReleasePreviewChannel Release: N/A - First release for this tracker
Release Notes: March 9, 2021—KB5000802 (OS Builds 19041.867 and 19042.867)
Note: N/A
Release Date: March 9, 2021
Days Since Last #ReleasePreviewChannel Release: N/A - First release for this tracker
Release Notes: March 9, 2021—KB5000802 (OS Builds 19041.867 and 19042.867)
Note: N/A
The IT Pro Guide to Microsoft Insider Programs
Microsoft develops future updates for Windows 10 across three development channels (Dev, Beta, and Release Preview).
This build tracker will provide enterprise and business customers a chronological reference list of all pre-release advanced quality cumulative updates in the Release Preview Channel for Windows 10.
According to Microsoft, the key considerations for Release Preview Channel builds are:
For users who want stability and release validation for hardware and software compatibility.
Provides access to advanced quality updates (cumulative updates) for Windows 10.
Builds are the most stable in development and are fully supported by Microsoft.
Visit the Windows Insider for Business page for more details and enrollment information.
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Tracker Milestones
March 9, 2021: Started tracking Release Preview Channel Development for Windows 10 (Version 20H2).
April 28, 2021: Started tracking Release Preview Channel Development for Windows 10 (Version 21H1).
September 2, 2021: Started tracking Release Preview Channel Development for Windows 10 (Version 21H2).
October 8, 2021: This tracker is no longer documenting Windows 10 Release Preview Channel builds.
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