Microsoft announced the upcoming release of Windows 11 in late June and is now releasing preview builds to some members of its Windows Insider program. The new operating system is scheduled to begin rolling out on October 5.

The Windows Insider program is divided into three channels:

The Beta Channel is currently receiving previews for the initial Windows 11 release, while the Dev Channel is testing potential features for Windows 11 updates beyond the initial October 5 release. The Release Preview Channel is not receiving Windows 11 updates; it is instead receiving builds for the next Windows 10 feature update.

Not everyone can participate in the Windows 11 Insider program, because the new operating system has more stringent system requirements than Windows 10. As outlined in this Microsoft blog post, if your PC fails to meet the minimum hardware requirements for Windows 11, you cannot join the Dev or Beta Channels. You may instead join the Release Preview Channel for testing Windows 10 preview updates. (See our guide to Windows 10 Insider Preview builds for details about those releases.)

If you were a member of the Windows 10 Insider Dev Channel prior to June 24 and your PC doesn’t meet the hardware requirements, you can still receive Windows 11 builds for now. After Windows 11 is generally available, PCs that don’t meet the minimum requirements will not receive Windows 11 Insider Preview builds.

Use the links below to find information about the Windows 11 preview builds that have been released to the Dev and Beta Channels:

For each build, we've included the date of its release, which Insider channel it was released to, a summary of what’s in the build, and a link to Microsoft's announcement about it.

Release date: September 2, 2021

Released to: Dev Channel

With this build, the Dev Channel moves back to receiving only builds from the active development branch (RS_PRERELEASE). This means the Dev Channel builds no longer match the version of Windows 11 that will be released on October 5th. Dev Channel builds represent the newest works in progress and are not always stable.

The build changes the way SMB compression (compression of files as they’re sent over a network) works. From now on, algorithms will not determine whether to compress files — files will always be compressed if a user asks for it.

Additionally, there are several minor changes in the build, including notifications now having acrylic backgrounds. There are also many bug fixes, including for one that caused the font in the taskbar previews to incorrect and another that crashed explorer.exe when using Alt-Tab.

The build also has more than a dozen known issues, including the taskbar sometimes flickering when switching input methods, and widgets displaying in the wrong size on external monitors.

(Get more info about Windows 11 Insider Preview Build 22449.)

Release date: September 2, 2021

Released to: Beta Channel

This build introduces a “Taskbar settings” page, which lets you hide and unhide icons on the taskbar. It also includes a small number of bug fixes, including one that caused some users to  get an unexpected error when trying to take pictures with certain USB cameras, and another in which ratings and reviews weren’t available for some Microsoft Store apps.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which after clicking the Search icon on the taskbar, the Search panel may not open.

 (Get more info about Windows 11 Insider Preview Build 22000.176.)

Release date: August 27, 2021

Released to: Dev and Beta Channels

This build introduces a Microsoft 365 widget that displays relevant documents, news, and meeting recordings to enterprise users. It only works if you’re signed into your Azure Active Directory (AAD) account on Windows 11. And Chat with Microsoft Teams now supports more than 50 languages.

The build also includes five bug fixes, including for a bug in which typing certain phrases into the search box in Settings sometimes crashed Settings, and another in Microsoft Teams in which videos sometimes froze or displayed a black image during video calls.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which after clicking the Search icon on the taskbar, the Search panel may not open.

 (Get more info about Windows 11 Insider Preview Build 22000.168.)

Release date: August 19, 2021

Released to: Dev and Beta Channels

This build fixes a bug in which the taskbar sometimes showed the “location in use” icon even when it had been blocked in preferences.

For Insiders in the Dev Channel, this build also includes the revamped Windows Clock app, with a new feature called Focus Sessions that lets you do things such as set timers, automatically play music from Spotify, and work directly with Microsoft’s To Do app. Go here for details.

The build is also available as an ISO from the Windows Insider Preview Downloads page for those who want to install it from media rather than online. Using this method, users experience the full Windows 11 setup process.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which after clicking the Search icon on the taskbar, the Search panel may not open.

 (Get more info about Windows 11 Insider Preview Build 22000.160.)

Release date: August 12, 2021

Released to: Dev and Beta Channels

With this build, Insiders in the Beta Channel now have access to Chat from Microsoft Teams. The feature, which was previously rolled out to Insiders in the Dev Channel, includes one-to-one and group audio and video calling. You can create and join meetings, toggle your microphone and camera on or off, and choose your preferred speakers, mic, and camera. You can also share your screen, see the roster of participants, admit meeting participants from the lobby, chat, and see people’s video in a gallery view. For more details, see “First Preview of Chat from Microsoft Teams begins rolling out to Windows Insiders.”

The build also rolls out the new Snipping Tool for Windows 11, and updated Calculator, Mail, and Calendar apps for Insiders in the Dev Channel. For details, see “First set of Windows app updates rolling out to Windows Insiders for Windows 11.”

There are seven fixes in this build, including for a bug in which the taskbar repeatedly crashed inside the Windows Sandbox, and another in which the “location in use” indicator icon wasn’t showing up in the taskbar when it should have been.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which the Search panel may not open when you click the Search icon on the taskbar.

 (Get more info about Windows 11 Insider Preview Build 22000.132.)

Release date: August 5, 2021

Released to: Dev and Beta Channels

This build introduces a new family widget for MSA accounts (a single sign-on Microsoft account). It lets people see recent activity of members of their Microsoft family group. The build also fixes several dozen bugs, including one in which File Explorer didn’t show an updated scroll bar in dark mode; another that caused search in Settings to be in a permanently broken state, saying “No result” for every search; and one in which explorer.exe crashed when the Task View button was clicked.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which after clicking the Search icon on the taskbar, the Search panel may not open.

 (Get more info about Windows 11 Insider Preview Build 22000.120.)

Release date: July 22, 2021

Released to: Dev Channel

This build introduces Microsoft Teams integration into Windows 11, including a Teams Chat flyout on the taskbar. For more details, see Microsoft’s blog post, “First Preview of Chat from Microsoft Teams begins rolling out to Windows Insiders.” Note that not every Insider will see the feature right away.

There are also a variety of minor new features, including making the taskbar calendar flyout fully collapse when clicking the chevron in the top corner to give more room for notifications.

Several dozen bugs have been fixed, including one in which when you right-clicked the desktop or File Explorer, the resulting context menu and submenus appeared partially off screen, and another in which sign-in wasn’t working for widgets in some scenarios due to authentication hanging.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which the taskbar sometimes flickers when switching input methods.

 (Get more info about Windows 11 Insider Preview Build 22000.100.)

Release date: July 15, 2021

Released to: Dev Channel

This build introduces a new entertainment widget that displays new and featured movie titles in the Microsoft Store. There are also many bug fixes, including for one in which the new command bar didn’t appear when the “Open folders in a separate process” is enabled under File Explorer Options > View, and another that made Settings periodically crash when it launched.

There are many known issues in this build, including one in which you might be unable to enter text when using search from Start or the taskbar, and another in which the right-click menu and submenus from the desktop or File Explorer may appear partially off-screen.

 (Get more info about Windows 11 Insider Preview Build 22000. 71.)

Release date: July 8, 2021

Released to: Dev Channel

Among other changes in this build, the Start menu now includes a search box, Power mode settings are now available on the Power & battery page in Settings, and several system alert dialog boxes, such as the alert for when your battery is running low or when you change your display settings, now adhere to the new Windows 11 visual design.

The build includes a wide variety of bug fixes, including one in which Settings could not be launched, another in which you could not pin and unpin apps from Start, another in which the command bar in File Explorer disappeared, and another in which the snap layouts did not appear until you rebooted your PC.

In addition, a remote code execution exploit in the Windows Print Spooler service, known as “PrintNightmare,” has been closed. For details, see CVE-2021-34527.

There are many known issues in this build, including one in which you might be unable to enter text when using Search from Start or the taskbar, and another in which the new command bar may not appear when “Open folders in a separate process” is enabled under File Explorer Options > View.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about Windows 11 Insider Preview Build 22000.65.)

Release date: June 28, 2021

Released to: Dev Channel

This first Insider Preview for Windows 11 is a big one and offers many of the new features expected to be part of the shipping version of the new operating system.

General interface changes: The Start menu is now centered, rather than pinned to the left of the screen. It includes a set of pinned apps as well as recently opened files in OneDrive on all your cloud-connected devices, including PCs and smartphones. The taskbar is centered as well and offers new animations. It includes a button on the lower-right corner for notifications and for making quick changes to your settings.

File Explorer has a new command bar and new overall look, including new context menus. New themes have been added to the overall interface, and Windows sounds have been redesigned.

Widgets: Windows 11 comes with a set of resizable informational widgets for things such as news, the weather, your calendar, local traffic, a to-do list, photos from OneDrive, news, sports, and more.

Multitasking: Windows 10’s “Snap” feature that gives you control over how you can arrange your open windows gets a makeover. You can choose from pre-built Snap layouts and arrange them into predesigned Snap groups. Desktops available via Task View can now be reordered and have custom backgrounds.

Touch, inking, and voice input: The touch keyboard gets 13 new themes and can be resized. There’s also a voice typing launcher, and several new touch gestures. The build lets you quickly switch between additional languages and keyboards via a switcher that appears at the lower right on the taskbar next to Quick Settings. There’s also now a menu for customizing digital pens.

Other changes include:

Known issues: There are more than two dozen known issues in this build across a wide variety of features, including the taskbar, Settings, Start, Search, Widgets and the Store. For example, when upgrading a device with multiple user accounts to Windows 11, Settings will fail to launch; after clicking the Search icon taskbar, the Search panel may not open; and when upgrading to Windows 11 from Windows 10 or when installing an update to Windows 11, some features may be deprecated or removed.

Get more info about Windows 11 Insider Preview Build 22000.51.

Read this next: What the enterprise needs to know about Windows 11

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