Windows 11 Build 22621.457 rolls out to Release Preview Channel, improving Microsoft Defender for Endpoint

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The latest Insider build of Windows 11 improves Microsoft Defender for Endpoint's ability to combat ransomware.

Surface Laptop Studio
(Image credit: Future)

What you need to know

  • Windows 11 Build 22621.457 recently shipped to Insiders in the Release Preview Channel.
  • The update improves Microsoft Defender for Endpoint's ability to combat ransomware attacks.
  • Windows 11 also gained the ability to view usage history for a range of resources, including the camera, microphone, and phone calls.

Microsoft rolled out Windows 11 Build 22621.457 to Release Preview Channel Insiders this week. The update brings a small handful of new features, including enhancements to Microsoft Defender for Endpoint that make the tool better at combatting ransomware. The Settings app on Windows 11 gained the ability to show usage history for several resources as well, including the camera, microphone, and phone calls.

As is normally the case, the build also brings a long list of fixes.

Here's what's new in Windows 11 Build 22621.457:

Windows 11 Build 22621.457 changelog

  • New! We enhanced Microsoft Defender for Endpoint’s ability to identify and intercept ransomware and advanced attacks.
  • New! We compressed a file regardless of its size if you have configured Server Message Block (SMB) Compression.
  • New! We improved storage replication that occurs over low bandwidth or congested wide area networks (WAN).
  • New! You can now view the usage history for the following resources from the Settings page: 
  • Camera 
  • Microphone 
  • Phone Calls 
  • Messaging 
  • Contacts 
  • Screenshots and apps 
  • Music library 

Windows 11 Build 22621.457 fixes

  • We fixed an issue that causes Windows to display tablet mode features for some devices that do not have touchscreens.
  • We fixed an issue that causes some application windows to have blank sections in the Task View preview.
  • We fixed an issue that occurs for some of you when you copy files from network drives. The error code is 0x80070026.
  • We fixed an issue that might cause the Local Security Authority Server Service (LSASS) to leak tokens. This issue affects devices that have installed Windows updates dated June 14, 2022 or later. This issue occurs when the device performs a specific form of service for user (S4U) in a non-Trusted Computing Base (TCB) Windows service that runs as Network Service.
  • We fixed an issue that, in certain cases, causes sihost.exe to use a high amount of the CPU.
  • We fixed an issue that causes Microsoft Edge to stop responding when you use IE mode. This issue also prevents you from interacting with a dialog. 40242609
  • We fixed an issue that causes the App-V client service to leak memory when you delete App-V registry nodes.
  • We fixed an issue that prevents you from opening a URL if the URL’s length is more than 2084 characters. This update supports a URL of up to 8192 characters.
  • We fixed an issue that prevents codecs from being updated from the Microsoft Store.
  • We fixed an issue that causes ServerAssignedConfigurations to be null in a few full configuration scenarios.
  • We fixed an issue that sometimes prematurely interrupts the resizing operations of a Snap Assist area.
  • We fixed an issue that might cause the deployment of the Windows Hello for Business certificate to fail in certain circumstances after you reset a device.
  • We fixed an issue that prevents you from reinstalling Universal Printers after you remove them.
  • We fixed an issue that prevents non-Windows devices from authenticating when they connect to a Windows-based remote desktop and use a smart card as the authentication method.
  • We fixed an issue that causes the Settings app to stop working on server domain controllers (DCs) when accessing the Privacy > Activity history page.
  • We fixed an issue that affects a lookup for a nonexistent security ID (SID) from the local domain using read-only domain controller (RODC). The lookup unexpectedly returns the STATUS_TRUSTED_DOMAIN_FAILURE error instead of STATUS_NONE_MAPPED or STATUS_SOME_MAPPED.
  • We fixed an issue that prevents the Storage Migration Service (SMS) from completing the inventory on servers that have many shares. Error event 2509 appears in Microsoft-Windows-StorageMigrationService/Admin channel (ErrorId=-2146233088/ErrorMessage=”Invalid table id”).
  • We fixed an issue that affects the Sync across your devices option under Settings > System > Clipboard. The option will not remain enabled. 

Microsoft outlined all of the fixes and improvements in its blog post about Windows 11 Build 22621.457.

Sean Endicott
Sean Endicott
News Writer and apps editor

Sean Endicott is a tech journalist at Windows Central, specializing in Windows, Microsoft software, AI, and PCs. He's covered major launches, from Windows 10 and 11 to the rise of AI tools like ChatGPT. Sean's journey began with the Lumia 740, leading to strong ties with app developers. Outside writing, he coaches American football, utilizing Microsoft services to manage his team. He studied broadcast journalism at Nottingham Trent University and is active on X @SeanEndicott_ and Threads @sean_endicott_.