In this article, we will talk about the latest Preview Build for Windows 11 26H2 in the Dev Channel, which is the Build 26300.7733.
Starting recently, the Dev Channel is jumping ahead to receive 26300 series builds. This means that the window to switch from the Dev Channel to the Beta Channel is closed once Build 26300.7674 is installed. If you are in the Dev Channel today and still want to switch to the Beta Channel at the last minute, when Build 26300.7674 is offered you can pause updates in Windows Update and switch your channel to the Beta Channel and un-pause updates.
These 26300 series builds will contain many of the same features and improvements as the 26220 series builds that will continue to be released in the Beta Channel. Over time, we will be making behind-the-scenes platform changes in each build so they may have different known issues because of those changes.
In the case of Build 26300.7674 today – this build contains the same features and improvements as Build 26220.7653 released previously.
New Features
New Sysmon Feature
Previously announced here, Windows now brings Sysmon functionality natively to Windows. Sysmon functionality allows you to capture system events that can help with threat detection, and you can use custom configuration files to filter the events you want to monitor. The captured events are written on the Windows event log, enabling them to be used with security applications and a wide range of use cases.
Built-in Sysmon is disabled by default and must be explicitly enabled.
- Go to Settings > System > Optional features > More Windows features > checking Sysmon or in PowerShell or command prompt:
- Dism /Online /Enable-Feature /FeatureName:Sysmon
- To complete the installation, from PowerShell or command prompt run:
- sysmon -i
Note: If you’ve already installed Sysmon from the website, it must be uninstalled before enabling the built-in Sysmon.
Documentation will be added to Windows soon. The functionality of Sysmon remains unchanged, learn more https://learn.microsoft.com/sysinternals/downloads/sysmon.
Voice Access
Support for the Netherlands locale has been added.
Fixes in this Build
File Explorer
- We fixed a few issues in File Explorer, including accessibility improvements (keyboard navigation and access keys), folder renaming with custom names, and missing icons/tooltips for “Add to favorites”.
Other
- We fixed an issue that caused apps to freeze when working with files on OneDrive or Dropbox. Some Outlook setups with PSTs on OneDrive could also hang or reload email data.
For more information about this Build, you can check this article from the Microsoft Blog.
For a more in-depth presentation of the New Build, you can watch the video below from the youtube channel.

