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Windows 10 Release Preview Channel Build Tracker
Richard Hay Oct 08, 2021

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Windows 10 (Version 21H2) Build 19044.1263 #ReleasePreview

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.

Windows 10 (Version 21H2) Build 19044.1237 #ReleasePreview

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.

Windows 10 (Version 21H2) Build 19044.1202 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1202 #ReleasePreview

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.

Windows 10 (Version 21H1) Build 19043.1200 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1165 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1151 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1149 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1147 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1083 #ReleasePreview

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.

Windows 10 (Version 21H1) Build 19043.1081 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.1052 #ReleasePreview

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.

Windows 10 (Version 21H1) Build 19043.1023 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.985 #ReleasePreview

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

Windows 10 (Version 21H1) Build 19043.964 #ReleasePreview

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

Windows 10 (Version 20H2) Build 19042.964 #ReleasePreview

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

Windows 10 (Version 20H2) Build 19042.962 #ReleasePreview

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

Windows 10 (Version 20H2) Build 19042.928 #ReleasePreview

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

Windows 10 (Version 20H2) Build 19042.906 #ReleasePreview

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

Windows 10 (Version 20H2) Build 19042.867 #ReleasePreviewChannel

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

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