after the 25h2 update a power shell screen popup

The popup screen you are seeing after the 25H2 update is likely related to PowerShell's application control features, which include Smart App Control. Smart App Control is designed to enhance security by ensuring that only signed code or code predicted to be safe runs on your device. It can block apps that are not recognized as safe, which might be the reason for the popup if it is alerting you about its status or settings.

To toggle the Smart App Control blocker on and off, you can follow these steps:

1. Open Settings on your Windows device.
2. Navigate to Windows Security > App and Browser Control.
3. Here, you can check if Smart App Control is installed and its current mode (enforcement or evaluation).

If you need to change the settings, you may need to use PowerShell commands or modify registry settings, but be cautious as this can affect your system's security. Make sure to understand the implications of turning Smart App Control off, as it is designed to protect your device from untrusted applications.

References:

• Smart App Control overview
• Use App Control to secure PowerShell
• Application Control for Windows
• PowerShell security features
• Windows 11, version 24H2 known issues and notifications