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Welcome to Flight Hub! Use this dashboard to quickly identify the latest Windows Insider Preview Builds. You can also see SDK and ISO releases.

Active Development 27000 Series Builds of Windows 11

27000 series builds reflect some of the latest work in progress code from our engineers.

Build Canary ISO
27898 7/11/2025
27891 7/3/2025
27881 6/19/2025 6/19/2025
27871 6/4/2025
27868 5/29/2025
27863 5/23/2025
27858 5/16/2025
27842 4/23/2025 4/25/2025
27823 3/26/2025
27818 3/19/2025
27813 3/12/2025
27808 3/7/2025
27802 2/28/2025
27788 2/5/2025
27783 1/29/2025
27774 1/16/2025 1/16/2025
27768 1/9/2025
27766 1/3/2025
27764 12/11/2024
27758 12/4/2024
27754 11/20/2024
27749 11/13/2024 11/13/2024
27744 11/6/2024
27729 10/17/2024
27723 10/9/2024
27718 10/2/2024 10/2/2024
27695 8/30/2024
27686 8/15/2024

Windows 11, version 25H2

Preview builds for Windows 11, version 25H2 (Build 26200). For more information on this year's annual feature update for Windows 11 - see this blog post.

Important

*These builds are delivered on top of Windows 11, version 24H2 (Build 26100) with an enablement package that increments the build number to Build 26200.

Build Dev Beta RP SDK ISO
26200.5670 6/27/2025
26200.5661 6/23/2025
26200.5651 6/13/2025
26200.5641 6/9/2025
26200.5622 6/2/2025
26200.5603 5/19/2025
26200.5600 5/12/2025
26200.5581 5/5/2025
26200.5570 4/25/2025
26200.5562 4/21/2025
26200.5551 4/11/2025
26200.5518 4/3/2025
26200.5516 3/28/2025
26200.5510 3/24/2025

Windows 11, version 24H2

Preview builds for Windows 11, version 24H2 (Build 26100).

Important

*These builds are delivered on top of Windows 11, version 24H2 (Build 26100) with an enablement package that increments the build number to Build 26120 for the Beta Channel.

Build Canary Dev Beta RP SDK ISO
26100.4762 7/10/2025
26120.4520* 6/27/2025
26100.4482 6/19/2025
26120.4452* 6/23/2025
26120.4441* 6/13/2025
26120.4250* 6/9/2025
26120.4230* 6/2/2025
26100.4188 5/19/2025
26120.4161* 5/23/2025
26120.4151* 5/19/2025
26120.3964* 5/12/2025
26120.3950* 5/5/2025
26120.3941* 4/25/2025
26100.3909 4/18/2025
26100.3902 4/10/2025
26120.3872* 4/21/2025
26120.3863* 4/11/2025
26120.3671* 4/3/2025
26120.3653* 3/28/2025
26100.3624 3/24/2025
26100.3613 3/18/2025
26120.3585* 3/24/2025
26120.3576* 3/17/2025 3/17/2025
26120.3380* 3/10/2025 3/10/2025
26120.3360* 2/28/2025 2/28/2025
26100.3321 2/18/2025
26120.3291* 2/21/2025 2/21/2025
26120.3281* 2/14/2025 2/14/2025
26120.3073* 1/31/2025 1/31/2025
26100.3025 1/21/2025
26120.3000* 1/24/2025
26120.2992* 1/17/2024
26120.2705* 12/18/2024
26120.2702* 12/13/2024
26120.2510* 12/6/2024
26100.2448 11/14/2024
26120.2415* 11/22/2024
26120.2222* 11/8/2024
26120.2213* 11/4/2024
26120.2200* 10/25/2024
26100.2152 10/10/2024
26120.2130* 10/18/2024
26120.2122* 10/11/2024
26120.1930* 10/4/2024
26120.1912* 9/30/2024
26100.1876 9/23/2024
26120.1843* 9/20/2024
26100.1586 8/19/2024
26120.1542* 8/19/2024
26120.1350* 8/9/2024
26120.1340* 8/5/2024
26120.1330* 7/26/2024
26100.1297 7/25/2024
26120.1252* 7/15/2024
26100.994 6/20/2024
26120.961* 6/14/2024
26100.863 6/15/2024 6/19/2024
26120.770* 6/7/2024
26120.751* 5/31/2024
26100.712 5/22/2024
26120.670* 5/17/2024
26120.470* 5/10/2024
26120.461* 5/3/2024
26100 4/3/2024 4/3/2024 4/3/2024 5/22/2024
26090 3/28/2024 3/28/2024 3/28/2024
26085 3/20/2024 3/20/2024 3/20/2024
26080 3/13/2024 3/13/2024 3/13/2024 3/13/2024
26063 2/22/2024 2/22/2024
26058 2/14/2024 2/14/2024 2/14/2024 2/14/2024
26052 2/8/2024 2/8/2024 2/8/2024
26040 1/26/2024 1/26/2024 1/26/2024
26020 1/3/2024 1/3/2024
26016 12/13/2023 12/13/2023 12/13/2023
26010 12/7/2023 12/7/2023
26002 11/29/2023 11/29/2023
25997 11/15/2023 11/15/2023 11/15/2023
25992 11/8/2023 11/8/2023
25987 11/1/2023 11/1/2023
25982 10/25/2023 10/25/2023
25977 10/18/2023 10/18/2023 10/18/2023
25967 10/5/2023 10/5/2023
25951 9/13/2023 9/13/2023 9/13/2023
25947 9/7/2023 9/7/2023
25941 8/31/2023 8/31/2023
25936 8/25/2023 8/25/2023
25931 8/16/2023 8/16/2023 8/16/2023
25926 8/9/2023 8/9/2023
25921 8/4/2023 8/4/2023
25915 7/27/2023 7/27/2023
25905 7/12/2023 7/12/2023 7/12/2023
25393 6/14/2023 6/14/2023 6/14/2023
25387 6/7/2023 6/7/2023
25381 6/2/2023 6/2/2023
25375 5/25/2023 5/25/2023
25370 5/22/2023 5/22/2023
25357 5/4/2023 5/4/2023
25352 4/28/2023 4/28/2023
25346 4/19/2023 4/19/2023 4/19/2023
25336 4/7/2023 4/7/2023
25330 3/30/2023 3/30/2023
25324 3/23/2023 3/23/2023 3/23/2023
25314 3/8/2023 3/8/2023
25309 3/2/2023 3/2/2023
25300 2/15/2023 2/15/2023 2/15/2023
25295 2/9/2023 2/9/2023
25290 2/1/2023 2/1/2023
25284 1/25/2023 1/25/2023
25281 1/19/2023 1/19/2023
25276 1/12/2023 1/12/2023 1/12/2023
25272 1/5/2023 1/5/2023
25267 12/14/2022 12/14/2022 12/14/2022
25262 12/9/2022 12/9/2022
25252 11/28/2022 11/30/2022
25247 11/18/2022 11/18/2022 11/18/2022
25236 11/2/2022 11/2/2022
25231 10/27/2022 10/27/2022
25227 10/19/2022 10/19/2022 10/19/2022
25217 10/6/2022 10/6/2022
25211 9/29/2022 9/29/2022
25206 9/21/2022 9/21/2022
25201 9/14/2022 9/14/2022 9/14/2022
25197 9/8/2022 9/8/2022 9/9/2022
25193 9/1/2022 9/1/2022
25188 8/24/2022 8/17/2022
25182 8/17/2022 8/17/2022
25179 8/10/2022 8/10/2022 8/10/2022
25174 8/3/2022 8/3/2022
25169 7/28/2022 7/28/2022
25163 7/20/2022 7/20/2022
25158 7/13/2022 7/13/2022 7/13/2022
25151 6/29/2022 6/29/2022
25145 6/22/2022 6/22/2022
25140 6/15/2022 6/15/2022 6/15/2022
25136 6/9/2022 6/9/2022
25131 6/2/2022 6/2/2022
25126 5/25/2022
25120 5/18/2022 5/18/2022
25115 5/11/2022

Windows 11, version 23H2

Preview builds for updates to Windows 11, version 23H2 (Build 22631).

Important

*These builds are delivered on top of Windows 11, version 23H2 (Build 22631) with an enablement package that increments the build number to Build 22635 for the Beta Channel.

Build Beta RP
22631.5696 7/10/2025
22631.5548 6/19/2025
22631.5545 6/12/2025
22631.5409 5/15/2025
22635.5305* 4/25/2025
22631.5261 4/15/2025
22635.5240* 4/18/2025
22635.5235* 4/14/2025
22635.5170* 4/7/2025
22635.5160* 3/31/2025
22631.5116 3/13/2025
22635.5097* 3/21/2025
22635.5090* 3/17/2025
22635.5025* 3/7/2025
22635.5015* 2/28/2025
22631.4969 2/13/2025
22635.4950* 2/21/2025
22635.4945* 2/14/2025
22635.4880* 2/7/2025
22635.4870* 2/3/2025
22631.4825 1/17/2025
22635.4805* 1/24/2025
22635.4800* 1/17/2025
22635.4660* 1/3/2025
22635.4655* 12/13/2024
22635.4580* 12/6/2024
22635.4515* 11/22/2024
22635.4510* 11/15/2024
22631.4534 11/14/2024
22635.4445* 11/8/2024
22635.4440* 11/1/2024
22635.4435* 10/25/2024
22631.4387 10/10/2024
22635.4371* 10/18/2024
22635.4367* 10/11/2024
22635.4300* 10/4/2024
22635.4291* 9/30/2024
22631.4247 9/23/2024
22635.4225* 9/20/2024
22635.4145* 8/30/2024
22631.4108 8/19/2024
22635.4082* 8/26/2024
22635.4076* 8/19/2024
22635.4010* 8/9/2024
22635.4005* 8/2/2024
22635.4000* 7/26/2024
22631.3951 7/11/2024
22635.3936* 7/22/2024
22635.3930* 7/12/2024
22635.3858* 6/28/2024
22631.3807 6/13/2024
22635.3790* 6/21/2024
22635.3785* 6/14/2024
22635.3720* 6/7/2024
22631.3668 5/17/2024
22635.3646* 5/23/2024
22635.3640* 5/17/2024
22635.3575* 5/10/2024
22635.3570* 5/3/2024
22635.3566* 4/26/2024
22631.3520 4/11/2024
22635.3500* 4/19/2024
22635.3495* 4/12/2024
22635.3430* 4/5/2024
22635.3420* 3/29/2024
22631.3371 3/21/2024
22635.3350* 3/13/2024
22635.3286* 3/8/2024
22635.3276* 3/4/2024
22631.3227 2/15/2024
22635.3212* 2/26/2024
22635.3209* 2/16/2024
22635.3140* 2/8/2024
22635.3139* 2/1/2024
22635.3130* 1/25/2024
22631.3078 1/11/2024
22635.3066* 1/19/2024
22635.3061* 1/11/2024
22635.2921* 1/4/2024
22635.2915* 12/14/2023
22635.2850* 12/8/2023
22635.2841* 12/4/2023
22631.2787 11/16/2023
22635.2776* 11/28/2023
22635.2771* 11/16/2023
22635.2700* 11/2/2023
22635.2552* 10/26/2023
22631.2506 10/26/2023
22635.2486* 10/19/2023
22635.2483* 10/13/2023
22635.2419* 10/10/2023
22631.2361 9/26/2023
22631.2338 9/12/2023
22631.2338 9/12/2023
22631.2271 9/6/2023
22631.2265 8/31/2023
22631.2262 8/24/2023
22631.2199 8/18/2023
22631.2191 8/10/2023
22631.2129 8/2/2023
22631.2115 7/26/2023
22631.2050 7/21/2023
22631.2048 7/13/2023
22631.1972 6/29/2023
22631.1906 6/22/2023
22631.1900 6/15/2023
22631.1835 6/7/2023
22631.1830 6/1/2023
22631.1825 5/25/2023

Windows 11, version 22H2

Preview builds for updates to Windows 11, version 22H2. Windows 11, version 22H2 (Build 22621) became generally available on September, 20th, 2022.

Important

*These builds include an enablement package to Build 22622/22623/22624 for rolling out new features in the Beta Channel.

Build Dev Beta RP SDK ISO
22621.4247 9/23/2024
22621.4108 8/19/2024
22621.3951 7/11/2024
22621.3807 6/13/2024
22621.3668 5/17/2024
22621.3520 4/11/2024
22621.3371 3/21/2024
22621.3227 2/15/2024
22621.3078 1/11/2024
22621.2787 11/16/2023
22621.2500 10/12/2023
22621.2361 9/22/2023
22621.2359 9/14/2023
22621.2213 8/10/2023
22621.2066 7/13/2023
22621.1926 6/20/2023
22621.1776 5/11/2023
22621.1755* 5/9/2023
22621.1690* 5/4/2023
22621.1680* 4/27/2023
22621.1631 4/13/2023
22621.1616* 4/20/2023
22621.1610* 4/13/2023
22621.1546* 4/7/2023
22621.1537* 3/31/2023
22621.1483 3/21/2023
22621.1470* 3/23/2023
22621.1465* 3/16/2023
22621.1391* 3/2/2023
22621.1343 2/21/2023
22621.1325* 2/16/2023
22621.1255* 2/9/2023
22621.1250* 2/2/2023
22621.1245* 1/26/2023
22621.1192 1/17/2023
22621.1180* 1/19/2023
22621.1095* 1/5/2023
22621.1037* 12/15/2022
22621.1028* 12/6/2022
22621.1020* 11/28/2022
22621.898 11/17/2022
22621.891* 11/10/2022
22621.885* 11/7/2022
22621.875* 10/27/2022
22621.870* 10/20/2022
22621.754 10/19/2022
22621.746* 10/13/2022
22621.741* 10/10/2022
22621.730* 9/29/2022
22621.675 10/11/2022
22621.607 9/22/2022
22621.601* 9/21/2022
22621.598* 9/12/2022
22621.590* 9/1/2022
22621.586* 8/24/2022
22621.575* 8/10/2022
22621.457 8/23/2022
22621.450* 8/2/2022
22621.440 7/28/2022
22621.436* 7/19/2022
22621.317 7/28/2022
22621.290* 7/5/2022
22621.169 6/30/2022
22621.160 6/11/2022
22621 5/11/2022 6/7/2022 5/11/2022 5/11/2022
22616 5/5/2022 5/5/2022
22610 4/29/2022 4/29/2022
22598 4/13/2022 4/13/2022 4/13/2022 4/13/2022
22593 4/6/2022 4/6/2022 4/6/2022
22581 3/23/2022 3/23/2022 3/23/2022
22579 3/18/2022 3/18/2022 3/18/2022
22572 3/9/2022 3/9/2022
22567 3/2/2022 3/2/2022
22563 2/24/2022 2/24/2022
22557 2/16/2022 2/16/2022
22543 1/27/2022 1/27/2022
22538 1/19/2022
22533 1/12/2022 1/12/2022
22526 1/6/2022
22523 12/15/2021 12/15/2021
22518 12/8/2021
22509 12/1/2021
22504 11/17/2021
22499 11/10/2021 11/10/2021
22494 11/3/2021
22489 10/27/2021
22483 10/20/2021 10/21/2021
22478 10/14/2021
22471 10/4/2021
22468 9/29/2021
22463 9/22/2021
22458 9/15/2021
22454 9/9/2021 9/9/2021
22449 9/2/2021

Windows 11, version 21H2 (Original Release)

Builds leading up to the very first release of Windows 11 on October 5, 2021. This release is Windows 11, version 21H2 (Build 22000).

Build Dev Beta RP SDK ISO
22000.2479 9/14/2023
22000.2359 8/10/2023
22000.2243 7/13/2023
22000.2121 6/15/2023
22000.2001 5/11/2023
22000.1879 4/13/2023
22000.1757 3/16/2023
22000.1639 2/16/2023
22000.1515 1/17/2023
22000.1279 11/10/2022
22000.1163 10/18/2022
22000.1041 9/15/2022
22000.917 8/16/2022
22000.829 7/14/2022
22000.776 6/16/2022
22000.706 5/19/2022
22000.651 4/14/2022
22000.588 3/15/2022
22000.526 2/10/2022
22000.466 1/14/2022
22000.348 11/19/2021
22000.346 11/12/2021
22000.282 10/15/2021
22000.194 9/16/2021 9/16/2021
22000.184 9/9/2021
22000.176 9/2/2021 9/2/2021
22000.168 8/27/2021 8/27/2021 8/27/2021
22000.160 8/19/2021 8/19/2021 8/19/2021
22000.132 8/12/2021 8/12/2021 8/12/2021 8/19/2021
22000.120 8/5/2021 8/5/2021 8/5/2021
22000.100 7/22/2021 7/29/2021 7/22/2021
22000.71 7/15/2021 7/15/2021
22000.65 7/8/2021
22000.51 6/28/2021 6/28/2021

Pre-Windows 11 Active Development Builds

These builds were early development builds for Windows 11.

Build Dev SDK ISO
21390 5/26/2021
21387 5/21/2021
21382 5/14/2021
21376 5/6/2021
21370 4/29/2021
21364 4/21/2021
21359 4/14/2021
21354 4/7/2021 4/7/2021
21343 3/24/2021
21337 3/17/2021
21332 3/10/2021
21327 3/3/2021
21322 2/24/2021
21318 2/19/2021
21313 2/12/2021
21301 1/27/2021
21296 1/21/2021
21292 1/13/2021
21286 1/6/2021 1/6/2021
21277 12/10/2020
20279 12/14/2020 12/16/2020
20277 12/10/2020 12/10/2020
20270 12/3/2020 12/3/2020
20262 11/18/2020 11/18/2020
20257 11/11/2020 11/11/2020
20251 11/4/2020 11/4/2020
20246 10/29/2020 10/29/2020
20241 10/21/2020 10/21/2020
20236 10/14/2020 10/14/2020
20231 10/7/2020 10/7/2020 10/7/2020
20226 9/30/2020 9/30/2020
20221 9/23/2020 9/23/2020
20215 9/16/2020 9/16/2020
20211 9/10/2020 9/10/2020
20206 9/2/2020 9/2/2020
20201 8/26/2020 8/26/2020 8/26/2020
20197 8/21/2020
20190 8/12/2020 8/12/2020
20185 8/5/2020 8/5/2020
20180 7/29/2020 7/29/2020
20175 7/22/2020 7/22/2020 7/22/2020
20170 7/15/2020 7/15/2020
20161 7/1/2020 7/2/2020
20152 6/24/2020
20150 6/17/2020 6/17/2020
19645 6/10/2020
19640 6/3/2020
19635 5/28/2020
19631 5/21/2020 5/21/2020
19628 5/13/2020 5/13/2020
19624 5/6/2020 5/6/2020
19619 4/29/2020 5/6/2020
19613 4/22/2020 4/28/2020
19608 4/15/2020 4/21/2020
19603 4/8/2020
19592 3/25/2020 3/31/2020
19587 3/18/2020 3/24/2020
19582 3/12/2020 3/17/2020
19577 3/5/2020 3/10/2020
19569 2/20/2020 2/25/2020
19564 2/12/2020 2/19/2020
19559 2/5/2020 2/11/2020
19555 1/30/2020 2/4/2020
19551 1/23/2020 1/28/2020
19546 1/16/2020 1/21/2020
19541 1/8/2020
19536 12/16/2019

Windows 10, version 22H2

Build Beta Release Preview ISO
19045.6156 7/10/2025
19045.6033 6/19/2025
19045.6029 6/12/2025
19045.5912 5/15/2025
19045.5794 4/14/2025
19045.5674 3/13/2025
19045.5552 2/17/2025
19045.5435 1/17/2025
19045.5194 11/14/2024 11/14/2024
19045.5070 10/14/2024 10/14/2024
19045.4955 9/16/2024 9/16/2024
19045.4842 8/22/2024 8/22/2024
19045.4713 7/11/2024 7/11/2024
19045.4593 6/13/2024 6/13/2024
19045.4472 5/20/2024
19045.4353 4/15/2024
19045.4235 3/19/2024
19045.4233 3/14/2024
19045.4116 2/15/2024
19045.3992 1/11/2024
19045.3757 11/20/2023
19045.3754 11/16/2023
19045.3633 10/17/2023
19045.3513 9/18/2023
19045.3391 8/10/2023
19045.3269 7/13/2023
19045.3154 6/22/2023
19045.3030 5/11/2023
19045.2908 4/13/2023
19045.2787 3/16/2023
19045.2670 2/16/2023
19045.2301 11/10/2022
19045.1865 7/28/2022

Older Windows Insider Preview Builds

A complete history of Windows Insider Preview builds released since October 2014 will be added back in a future update.