Check out Windows 11 Build 25206 on the Dev Channel

Microsoft’s release of Windows 11 version 22H2 isn’t the only highlight we saw today. In fact, there's a new build for Windows 11 Insiders today.

We've already taken a look at Windows 11 builds 22621.601 and 22622.601, which are now available on the Beta channel, so let's focus on the Dev channel now.

So, if you are testing on the Dev Channel, this article is definitely for you. We will dig deeper and discover everything.

A closer look at Windows 11 Build 25206?

In fact, the tech giant just released a new Windows 11 Insider build to the Dev Channel in the form of build 25206.

Keep in mind that Microsoft will release an entirely new operating system every three years, so be sure to check out what we know about Windows 12 so far.

According to Microsoft, the main highlight of this release is a change in the behavior of the SMB authentication rate limiter.

You should know that the SMB Authentication Rate Limiter in the Insider Preview build adds an additional protection mechanism to the SMB Server service.

It actually implements a delay between each failed NTLM authentication. This means that if an attacker previously sent 300 brute force attempts per second from the client for 5 minutes (90,000 passwords), the same number of attempts will now take at least 50 hours.

So, starting with Build 25206, it is enabled by default and set to 2000 milliseconds (2 seconds). Any incorrect username or password sent to SMB now causes a 2-second delay by default in all versions of Windows Insiders.

This protection is turned off by default when first released to Windows Insiders. This behavior change has not been made for Windows Server Insiders, it still defaults to 0.

Changes and Improvements

[General]

• The updated Open With dialog is now available in the development channel Available to all Windows Insiders.

[Graphics]

• Windows Insiders can now save power by using Dynamic Refresh Rate (DRR) on external monitors! To enable this setting, you must have a 120 Hz monitor that supports VRR (Variable Refresh Rate) and have the WDDM 3.1 driver installed. To select a dynamic refresh rate, go to Settings > System > Display > Advanced Display and then under Refresh Rate Make a selection under .

[File Manager]

• Searching from the File Explorer home page will display recent file activity for cloud files in the details view.

[ENTER]

• We are starting to roll out a change that assumes the use of clipboard history (WIN V) on the password field. We're starting to roll out this feature, so the experience isn't available to all Insiders yet.

Fixes

[General]

• OneDrive Settings should no longer unexpectedly request settings permission every time your PC restarts.
• Fixed for high-click explorer.exe affecting some Insiders.

[Settings]

• Fixed a settings crash that could occur when searching for and selecting certain Narrator-related settings.

[Search]

• Fixed a high-hit search crash that affected some Insiders on recent flights.

[Other]

• The Windows Sandbox window should now resize correctly if you snap it to the side of the screen.
• Fixed an issue that could cause a memory leak in Windows error reporting after certain crashes.
• If the focus is on the desktop, pressing ALT F4 and Enter should now shut down your PC, rather than having to move the keyboard focus first (as has been the case with the last few flights).
• The computer icon is now displayed again in the Shut Down Windows dialog box.

Known Issues

[General]

• [New] We are investigating "Date, Time and Time Zone" An issue where the "Incorrect settings" message appears incorrectly and prevents the installation from continuing.
• [New] Resetting your PC using the "Reset this PC" option will break UWP apps after the reset. If you need to reset your device on Build 25201 or higher, please manually back up your files and complete a clean installation using the latest ISO provided at aka.ms/WIPISO.
• We're investigating reports that audio stopped working for some Insiders after upgrading to the latest flights.
• We are investigating reports that a few different applications have started crashing in recent builds.

[File Manager]

• We are working to resolve an issue where command bar items such as copy, paste, and empty the recycle bin may unexpectedly not be enabled when they should be .

[Settings]

• We are investigating an issue where uninstalling certain apps using Settings > Apps > Installed Apps is not working properly some problems.

【Tablet Optimized Taskbar】

• The taskbar sometimes flickers when transitioning between desktop posture and tablet posture.
• When switching between desktop posture and tablet posture, the taskbar takes longer than expected to transition to the touch-optimized version.
• Using left or right edge gestures may cause widgets or notification center (respectively) to overlap or be cut off from the taskbar.
• When using the lower right edge gesture to view quick settings, the taskbar would sometimes stay in the expanded state instead of closing to the collapsed state.
• The taskbar sometimes collapses when there are no running windows on the desktop when it should be expanded.

[Widgets]

• In right-to-left display languages ​​(such as Arabic), when clicking the expanded view of the widget panel, the widget Content animates out of view until the component palette is resized.
• Notification badge numbers may appear misaligned on the taskbar.

1. Press Win I to access Settings.
2. Select the System category and click Troubleshoot.
3. Press the Other Troubleshooting button.
4. Press the Run button next to Windows Update.

Also, be sure to report any other issues you may encounter so Microsoft can address and improve the overall operating system experience for all of us.

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