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Why is Preview Update KB5077241 Installing Automatically on Windows 11 25H2?
RRRThe recent Windows 11 preview update KB5077241, intended as an optional installation, has been automatically deploying on systems running version 25H2 and 24H2. This deployment appears to stem from unexpected changes in the Group Policy Object (GPO) configurations following a fresh installation or system reset.
Understanding the KB5077241 Update Anomaly
Microsoft typically releases preview updates, such as KB5077241, as optional installations that require manual user initiation. However, administrators and users have reported that the “Optional Updates” Group Policy setting was mysteriously enabled (set to 1) after installing the February 2026 refreshed Windows 11 25H2 installation media. This specific policy value dictates whether optional updates and gradual feature rollouts install automatically without user intervention. According to Microsoft’s standard update policies, the default value should be 0, which prevents automatic installation of optional content.
Identifying the Cause: Bug or Intentional Change?
The automatic installation behavior has caused confusion because the gpedit.msc tool often displays the “Optional Updates” policy as “Not Configured,” contradicting the system’s actual behavior. When users manually intervene by setting the policy to “Disabled” and then reverting it back to “Not Configured,” the system correctly registers the intended state, and the automatic installations cease. This behavior strongly suggests a configuration bug within the latest Windows 11 25H2 installation image rather than a deliberate, permanent change to Microsoft’s default update policies.
How to Resolve the Automatic Installation Issue
To regain control over optional updates, users and IT administrators can manually correct the Group Policy settings.
- Open the Group Policy Editor (gpedit.msc).
- Navigate to Computer Configuration > Administrative Templates > Windows Components > Windows Update > Manage updates offered from Windows Update.
- Locate the policy governing optional updates.
- Set the policy to “Disabled,” apply the changes, and then set it back to “Not Configured.”
Alternatively, administrators can use PowerShell to enforce the correct registry values for the Windows Update service.