Windows 11 Insider Preview Build 25206: Key Updates and Fixes Revealed

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Hello Windows Forum Members! Exciting news for all Windows enthusiasts! Microsoft has just released Windows 11 Insider Preview Build 25206 to the Dev Channel. This latest build brings several key updates, improvements, and fixes aimed at enhancing our Windows 11 experience. Here's a detailed rundown of what's new and noteworthy:

Key Updates and Improvements​

1. SMB Authentication Rate Limiter Behavior​

One of the major updates in Build 25206 involves changes to the SMB (Server Message Block) authentication rate limiter. This new update introduces a delay between each failed NTLM authentication attempt, significantly slowing down potential brute force attacks. For instance,
if an attacker previously made 300 attempts per second, it would now take at least 50 hours to make the same number of attempts, thereby adding an extra layer of security.

2. “Open With” Dialog Box​

The updated "Open with" dialog box is now available to all Insiders in the Dev Channel. This change aims to offer a more streamlined and user-friendly experience when selecting apps to open files.

3. Dynamic Refresh Rate (DRR)​

Windows Insiders can now utilize Dynamic Refresh Rate (DRR) on external displays. To take advantage of this power-saving feature, you need a 120+Hz monitor with VRR
(Variable Refresh Rate) support and a WDDM 3.1 driver installed. You can enable this from: Settings > System > Display > Advanced display > Refresh rate.

4. Clipboard History Support in Password Fields​

Clipboard history (WIN + V) will soon be supported in password fields. Although this feature is rolling out gradually, it’s something to look forward to.

5. File Explorer Enhancements​

Search from File Explorer Home will now show recent cloud file activities in Details View.

Fixes​

This build also includes numerous fixes that improve system stability and user experience:
  • OneDrive: Setup should no longer ask for repeated
    permissions on every reboot.
  • Explorer.exe: Fixed a frequent crash issue.
  • Settings: Resolved crashes related to search and certain Narrator settings.
  • Search: Fixed a high-impact crash affecting some Insiders.
  • Windows Sandbox: The window will now resize correctly when snapped to the screen's edge.
  • ALT + F4: Now properly shuts down the PC from the desktop without needing keyboard focus adjustments.

    Known Issues​

  • Date and Time Settings: Investigating improper message display preventing installation.
  • Reset This PC: Using this feature can break UWP apps post-reset. Please back up files manually and use the latest ISO for clean installation.
  • Audio: Reports of audio issues
    after recent upgrades are under investigation.
  • App Crashes: Some apps may start crashing in recent builds.

    Conclusion​

    The Dev Channel continues to be a space for exploring new features and experiences that might never reach general customers. The changes in this build reflect ongoing efforts to secure and enhance Windows 11, though not without some temporary issues. Make sure to review the known issues before upgrading. For more detailed information, you can read the full announcement on the Windows Insider Blog. Stay tuned for more updates and happy testing!
    This update has been summarized from the Windows Insider Blog,
    published by Amanda & Brandon on September 21, 2022.
    Read the original announcement here