Microsoft has released Windows 11 Insider Preview Build 26120.670 to Windows Insiders in the development channel. The Dev Channel has received upgrades and improvements to improve the overall experience for Insiders using this release on their PCs. The update resolves a problem with the Network Locations header in File Explorer, raises the limit for NSEC3 validation in a recursive resolver, and addresses issues with domain controllers, Windows update installation, and Virtual Secure Mode scenarios such as VPN, Windows Hello, Credential Guard, and Key Guard.

Announcing Windows 11 Insider Preview Build 26120.670 (Dev Channel)

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26120.670 (KB5037869) to the Dev Channel. 

Changes and Improvements gradually being rolled out to the Dev Channel with toggle on*

[General]

• This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs.

Fixes for everyone in the Dev Channel

[Other]

• Fixed an issue where the Network Locations header was missing in the This PC section of File Explorer.
• This update affects next secure record 3 (NSEC3) validation in a recursive resolver. Its limit is now 1,000 computations. One computation is equal to the validation of one label with one iteration. DNS Server Administrators can change the default number of computations. To do this, use the registry setting below.
  • Name: \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters\
    MaxComputationForNsec3Validation
  • Type: DWORD
  • Default: 1000
  • Max: 9600
  • Min: 1

• This update addresses an issue that might affect domain controllers (DC). NTLM authentication traffic might increase.
• This update addresses an issue that affects the installation of a Windows update. It fails to complete. This occurs when you have to restart your device more than once.
• This update addresses an issue that might affect Virtual Secure Mode (VSM) scenarios. They might fail. These scenarios include VPN, Windows Hello, Credential Guard, and Key Guard.

Announcing Windows 11 Insider Preview Build 26120.670 (Dev Channel)